diff --git a/staging/src/k8s.io/apiserver/pkg/apis/apiserver/types.go b/staging/src/k8s.io/apiserver/pkg/apis/apiserver/types.go
index 1b2b4fd5e49..f3b4ae321ef 100644
--- a/staging/src/k8s.io/apiserver/pkg/apis/apiserver/types.go
+++ b/staging/src/k8s.io/apiserver/pkg/apis/apiserver/types.go
@@ -172,6 +172,7 @@ type JWTAuthenticator struct {
 	Issuer               Issuer
 	ClaimValidationRules []ClaimValidationRule
 	ClaimMappings        ClaimMappings
+	UserValidationRules  []UserValidationRule
 }
 
 // Issuer provides the configuration for a external provider specific settings.
@@ -185,18 +186,43 @@ type Issuer struct {
 type ClaimValidationRule struct {
 	Claim         string
 	RequiredValue string
+
+	Expression string
+	Message    string
 }
 
 // ClaimMappings provides the configuration for claim mapping
 type ClaimMappings struct {
 	Username PrefixedClaimOrExpression
 	Groups   PrefixedClaimOrExpression
+	UID      ClaimOrExpression
+	Extra    []ExtraMapping
 }
 
 // PrefixedClaimOrExpression provides the configuration for a single prefixed claim or expression.
 type PrefixedClaimOrExpression struct {
 	Claim  string
 	Prefix *string
+
+	Expression string
+}
+
+// ClaimOrExpression provides the configuration for a single claim or expression.
+type ClaimOrExpression struct {
+	Claim      string
+	Expression string
+}
+
+// ExtraMapping provides the configuration for a single extra mapping.
+type ExtraMapping struct {
+	Key             string
+	ValueExpression string
+}
+
+// UserValidationRule provides the configuration for a single user validation rule.
+type UserValidationRule struct {
+	Expression string
+	Message    string
 }
 
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
diff --git a/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/types.go b/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/types.go
index 22ac6eee340..9394ba6f70a 100644
--- a/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/types.go
+++ b/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/types.go
@@ -192,6 +192,13 @@ type JWTAuthenticator struct {
 	// claimMappings points claims of a token to be treated as user attributes.
 	// +required
 	ClaimMappings ClaimMappings `json:"claimMappings"`
+
+	// userValidationRules are rules that are applied to final user before completing authentication.
+	// These allow invariants to be applied to incoming identities such as preventing the
+	// use of the system: prefix that is commonly used by Kubernetes components.
+	// The validation rules are logically ANDed together and must all return true for the validation to pass.
+	// +optional
+	UserValidationRules []UserValidationRule `json:"userValidationRules,omitempty"`
 }
 
 // Issuer provides the configuration for a external provider specific settings.
@@ -225,14 +232,36 @@ type ClaimValidationRule struct {
 	// claim is the name of a required claim.
 	// Same as --oidc-required-claim flag.
 	// Only string claim keys are supported.
-	// +required
-	Claim string `json:"claim"`
+	// Mutually exclusive with expression and message.
+	// +optional
+	Claim string `json:"claim,omitempty"`
 	// requiredValue is the value of a required claim.
 	// Same as --oidc-required-claim flag.
 	// Only string claim values are supported.
 	// If claim is set and requiredValue is not set, the claim must be present with a value set to the empty string.
+	// Mutually exclusive with expression and message.
 	// +optional
-	RequiredValue string `json:"requiredValue"`
+	RequiredValue string `json:"requiredValue,omitempty"`
+
+	// expression represents the expression which will be evaluated by CEL.
+	// Must produce a boolean.
+	//
+	// CEL expressions have access to the contents of the token claims, organized into CEL variable:
+	// - 'claims' is a map of claim names to claim values.
+	//   For example, a variable named 'sub' can be accessed as 'claims.sub'.
+	//   Nested claims can be accessed using dot notation, e.g. 'claims.email.verified'.
+	// Must return true for the validation to pass.
+	//
+	// Documentation on CEL: https://kubernetes.io/docs/reference/using-api/cel/
+	//
+	// Mutually exclusive with claim and requiredValue.
+	// +optional
+	Expression string `json:"expression,omitempty"`
+	// message customizes the returned error message when expression returns false.
+	// message is a literal string.
+	// Mutually exclusive with claim and requiredValue.
+	// +optional
+	Message string `json:"message,omitempty"`
 }
 
 // ClaimMappings provides the configuration for claim mapping
@@ -240,6 +269,7 @@ type ClaimMappings struct {
 	// username represents an option for the username attribute.
 	// The claim's value must be a singular string.
 	// Same as the --oidc-username-claim and --oidc-username-prefix flags.
+	// If username.expression is set, the expression must produce a string value.
 	//
 	// In the flag based approach, the --oidc-username-claim and --oidc-username-prefix are optional. If --oidc-username-claim is not set,
 	// the default value is "sub". For the authentication config, there is no defaulting for claim or prefix. The claim and prefix must be set explicitly.
@@ -254,19 +284,136 @@ type ClaimMappings struct {
 	Username PrefixedClaimOrExpression `json:"username"`
 	// groups represents an option for the groups attribute.
 	// The claim's value must be a string or string array claim.
-	// // If groups.claim is set, the prefix must be specified (and can be the empty string).
+	// If groups.claim is set, the prefix must be specified (and can be the empty string).
+	// If groups.expression is set, the expression must produce a string or string array value.
+	//  "", [], and null values are treated as the group mapping not being present.
 	// +optional
 	Groups PrefixedClaimOrExpression `json:"groups,omitempty"`
+
+	// uid represents an option for the uid attribute.
+	// Claim must be a singular string claim.
+	// If uid.expression is set, the expression must produce a string value.
+	// +optional
+	UID ClaimOrExpression `json:"uid"`
+
+	// extra represents an option for the extra attribute.
+	// expression must produce a string or string array value.
+	// If the value is empty, the extra mapping will not be present.
+	//
+	// hard-coded extra key/value
+	// - key: "foo"
+	//   valueExpression: "'bar'"
+	// This will result in an extra attribute - foo: ["bar"]
+	//
+	// hard-coded key, value copying claim value
+	// - key: "foo"
+	//   valueExpression: "claims.some_claim"
+	// This will result in an extra attribute - foo: [value of some_claim]
+	//
+	// hard-coded key, value derived from claim value
+	// - key: "admin"
+	//   valueExpression: '(has(claims.is_admin) && claims.is_admin) ? "true":""'
+	// This will result in:
+	//  - if is_admin claim is present and true, extra attribute - admin: ["true"]
+	//  - if is_admin claim is present and false or is_admin claim is not present, no extra attribute will be added
+	//
+	// +optional
+	Extra []ExtraMapping `json:"extra,omitempty"`
 }
 
 // PrefixedClaimOrExpression provides the configuration for a single prefixed claim or expression.
 type PrefixedClaimOrExpression struct {
 	// claim is the JWT claim to use.
+	// Mutually exclusive with expression.
 	// +optional
-	Claim string `json:"claim"`
+	Claim string `json:"claim,omitempty"`
 	// prefix is prepended to claim's value to prevent clashes with existing names.
+	// prefix needs to be set if claim is set and can be the empty string.
+	// Mutually exclusive with expression.
+	// +optional
+	Prefix *string `json:"prefix,omitempty"`
+
+	// expression represents the expression which will be evaluated by CEL.
+	//
+	// CEL expressions have access to the contents of the token claims, organized into CEL variable:
+	// - 'claims' is a map of claim names to claim values.
+	//   For example, a variable named 'sub' can be accessed as 'claims.sub'.
+	//   Nested claims can be accessed using dot notation, e.g. 'claims.email.verified'.
+	//
+	// Documentation on CEL: https://kubernetes.io/docs/reference/using-api/cel/
+	//
+	// Mutually exclusive with claim and prefix.
+	// +optional
+	Expression string `json:"expression,omitempty"`
+}
+
+// ClaimOrExpression provides the configuration for a single claim or expression.
+type ClaimOrExpression struct {
+	// claim is the JWT claim to use.
+	// Either claim or expression must be set.
+	// Mutually exclusive with expression.
+	// +optional
+	Claim string `json:"claim,omitempty"`
+
+	// expression represents the expression which will be evaluated by CEL.
+	//
+	// CEL expressions have access to the contents of the token claims, organized into CEL variable:
+	// - 'claims' is a map of claim names to claim values.
+	//   For example, a variable named 'sub' can be accessed as 'claims.sub'.
+	//   Nested claims can be accessed using dot notation, e.g. 'claims.email.verified'.
+	//
+	// Documentation on CEL: https://kubernetes.io/docs/reference/using-api/cel/
+	//
+	// Mutually exclusive with claim.
+	// +optional
+	Expression string `json:"expression,omitempty"`
+}
+
+// ExtraMapping provides the configuration for a single extra mapping.
+type ExtraMapping struct {
+	// key is a string to use as the extra attribute key.
+	// key must be a domain-prefix path (e.g. example.org/foo). All characters before the first "/" must be a valid
+	// subdomain as defined by RFC 1123. All characters trailing the first "/" must
+	// be valid HTTP Path characters as defined by RFC 3986.
+	// key must be lowercase.
 	// +required
-	Prefix *string `json:"prefix"`
+	Key string `json:"key"`
+
+	// valueExpression is a CEL expression to extract extra attribute value.
+	// valueExpression must produce a string or string array value.
+	// "", [], and null values are treated as the extra mapping not being present.
+	// Empty string values contained within a string array are filtered out.
+	//
+	// CEL expressions have access to the contents of the token claims, organized into CEL variable:
+	// - 'claims' is a map of claim names to claim values.
+	//   For example, a variable named 'sub' can be accessed as 'claims.sub'.
+	//   Nested claims can be accessed using dot notation, e.g. 'claims.email.verified'.
+	//
+	// Documentation on CEL: https://kubernetes.io/docs/reference/using-api/cel/
+	//
+	// +required
+	ValueExpression string `json:"valueExpression"`
+}
+
+// UserValidationRule provides the configuration for a single user info validation rule.
+type UserValidationRule struct {
+	// expression represents the expression which will be evaluated by CEL.
+	// Must return true for the validation to pass.
+	//
+	// CEL expressions have access to the contents of UserInfo, organized into CEL variable:
+	// - 'user' - authentication.k8s.io/v1, Kind=UserInfo object
+	//    Refer to https://github.com/kubernetes/api/blob/release-1.28/authentication/v1/types.go#L105-L122 for the definition.
+	//    API documentation: https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#userinfo-v1-authentication-k8s-io
+	//
+	// Documentation on CEL: https://kubernetes.io/docs/reference/using-api/cel/
+	//
+	// +required
+	Expression string `json:"expression"`
+
+	// message customizes the returned error message when rule returns false.
+	// message is a literal string.
+	// +optional
+	Message string `json:"message,omitempty"`
 }
 
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
diff --git a/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/zz_generated.conversion.go b/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/zz_generated.conversion.go
index a7a09ad0eed..92060206840 100644
--- a/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/zz_generated.conversion.go
+++ b/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/zz_generated.conversion.go
@@ -96,6 +96,16 @@ func RegisterConversions(s *runtime.Scheme) error {
 	}); err != nil {
 		return err
 	}
+	if err := s.AddGeneratedConversionFunc((*ClaimOrExpression)(nil), (*apiserver.ClaimOrExpression)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_ClaimOrExpression_To_apiserver_ClaimOrExpression(a.(*ClaimOrExpression), b.(*apiserver.ClaimOrExpression), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*apiserver.ClaimOrExpression)(nil), (*ClaimOrExpression)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_apiserver_ClaimOrExpression_To_v1alpha1_ClaimOrExpression(a.(*apiserver.ClaimOrExpression), b.(*ClaimOrExpression), scope)
+	}); err != nil {
+		return err
+	}
 	if err := s.AddGeneratedConversionFunc((*ClaimValidationRule)(nil), (*apiserver.ClaimValidationRule)(nil), func(a, b interface{}, scope conversion.Scope) error {
 		return Convert_v1alpha1_ClaimValidationRule_To_apiserver_ClaimValidationRule(a.(*ClaimValidationRule), b.(*apiserver.ClaimValidationRule), scope)
 	}); err != nil {
@@ -131,6 +141,16 @@ func RegisterConversions(s *runtime.Scheme) error {
 	}); err != nil {
 		return err
 	}
+	if err := s.AddGeneratedConversionFunc((*ExtraMapping)(nil), (*apiserver.ExtraMapping)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_ExtraMapping_To_apiserver_ExtraMapping(a.(*ExtraMapping), b.(*apiserver.ExtraMapping), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*apiserver.ExtraMapping)(nil), (*ExtraMapping)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_apiserver_ExtraMapping_To_v1alpha1_ExtraMapping(a.(*apiserver.ExtraMapping), b.(*ExtraMapping), scope)
+	}); err != nil {
+		return err
+	}
 	if err := s.AddGeneratedConversionFunc((*Issuer)(nil), (*apiserver.Issuer)(nil), func(a, b interface{}, scope conversion.Scope) error {
 		return Convert_v1alpha1_Issuer_To_apiserver_Issuer(a.(*Issuer), b.(*apiserver.Issuer), scope)
 	}); err != nil {
@@ -211,6 +231,16 @@ func RegisterConversions(s *runtime.Scheme) error {
 	}); err != nil {
 		return err
 	}
+	if err := s.AddGeneratedConversionFunc((*UserValidationRule)(nil), (*apiserver.UserValidationRule)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_UserValidationRule_To_apiserver_UserValidationRule(a.(*UserValidationRule), b.(*apiserver.UserValidationRule), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*apiserver.UserValidationRule)(nil), (*UserValidationRule)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_apiserver_UserValidationRule_To_v1alpha1_UserValidationRule(a.(*apiserver.UserValidationRule), b.(*UserValidationRule), scope)
+	}); err != nil {
+		return err
+	}
 	if err := s.AddGeneratedConversionFunc((*WebhookConfiguration)(nil), (*apiserver.WebhookConfiguration)(nil), func(a, b interface{}, scope conversion.Scope) error {
 		return Convert_v1alpha1_WebhookConfiguration_To_apiserver_WebhookConfiguration(a.(*WebhookConfiguration), b.(*apiserver.WebhookConfiguration), scope)
 	}); err != nil {
@@ -364,6 +394,10 @@ func autoConvert_v1alpha1_ClaimMappings_To_apiserver_ClaimMappings(in *ClaimMapp
 	if err := Convert_v1alpha1_PrefixedClaimOrExpression_To_apiserver_PrefixedClaimOrExpression(&in.Groups, &out.Groups, s); err != nil {
 		return err
 	}
+	if err := Convert_v1alpha1_ClaimOrExpression_To_apiserver_ClaimOrExpression(&in.UID, &out.UID, s); err != nil {
+		return err
+	}
+	out.Extra = *(*[]apiserver.ExtraMapping)(unsafe.Pointer(&in.Extra))
 	return nil
 }
 
@@ -379,6 +413,10 @@ func autoConvert_apiserver_ClaimMappings_To_v1alpha1_ClaimMappings(in *apiserver
 	if err := Convert_apiserver_PrefixedClaimOrExpression_To_v1alpha1_PrefixedClaimOrExpression(&in.Groups, &out.Groups, s); err != nil {
 		return err
 	}
+	if err := Convert_apiserver_ClaimOrExpression_To_v1alpha1_ClaimOrExpression(&in.UID, &out.UID, s); err != nil {
+		return err
+	}
+	out.Extra = *(*[]ExtraMapping)(unsafe.Pointer(&in.Extra))
 	return nil
 }
 
@@ -387,9 +425,33 @@ func Convert_apiserver_ClaimMappings_To_v1alpha1_ClaimMappings(in *apiserver.Cla
 	return autoConvert_apiserver_ClaimMappings_To_v1alpha1_ClaimMappings(in, out, s)
 }
 
+func autoConvert_v1alpha1_ClaimOrExpression_To_apiserver_ClaimOrExpression(in *ClaimOrExpression, out *apiserver.ClaimOrExpression, s conversion.Scope) error {
+	out.Claim = in.Claim
+	out.Expression = in.Expression
+	return nil
+}
+
+// Convert_v1alpha1_ClaimOrExpression_To_apiserver_ClaimOrExpression is an autogenerated conversion function.
+func Convert_v1alpha1_ClaimOrExpression_To_apiserver_ClaimOrExpression(in *ClaimOrExpression, out *apiserver.ClaimOrExpression, s conversion.Scope) error {
+	return autoConvert_v1alpha1_ClaimOrExpression_To_apiserver_ClaimOrExpression(in, out, s)
+}
+
+func autoConvert_apiserver_ClaimOrExpression_To_v1alpha1_ClaimOrExpression(in *apiserver.ClaimOrExpression, out *ClaimOrExpression, s conversion.Scope) error {
+	out.Claim = in.Claim
+	out.Expression = in.Expression
+	return nil
+}
+
+// Convert_apiserver_ClaimOrExpression_To_v1alpha1_ClaimOrExpression is an autogenerated conversion function.
+func Convert_apiserver_ClaimOrExpression_To_v1alpha1_ClaimOrExpression(in *apiserver.ClaimOrExpression, out *ClaimOrExpression, s conversion.Scope) error {
+	return autoConvert_apiserver_ClaimOrExpression_To_v1alpha1_ClaimOrExpression(in, out, s)
+}
+
 func autoConvert_v1alpha1_ClaimValidationRule_To_apiserver_ClaimValidationRule(in *ClaimValidationRule, out *apiserver.ClaimValidationRule, s conversion.Scope) error {
 	out.Claim = in.Claim
 	out.RequiredValue = in.RequiredValue
+	out.Expression = in.Expression
+	out.Message = in.Message
 	return nil
 }
 
@@ -401,6 +463,8 @@ func Convert_v1alpha1_ClaimValidationRule_To_apiserver_ClaimValidationRule(in *C
 func autoConvert_apiserver_ClaimValidationRule_To_v1alpha1_ClaimValidationRule(in *apiserver.ClaimValidationRule, out *ClaimValidationRule, s conversion.Scope) error {
 	out.Claim = in.Claim
 	out.RequiredValue = in.RequiredValue
+	out.Expression = in.Expression
+	out.Message = in.Message
 	return nil
 }
 
@@ -492,6 +556,28 @@ func Convert_apiserver_EgressSelectorConfiguration_To_v1alpha1_EgressSelectorCon
 	return autoConvert_apiserver_EgressSelectorConfiguration_To_v1alpha1_EgressSelectorConfiguration(in, out, s)
 }
 
+func autoConvert_v1alpha1_ExtraMapping_To_apiserver_ExtraMapping(in *ExtraMapping, out *apiserver.ExtraMapping, s conversion.Scope) error {
+	out.Key = in.Key
+	out.ValueExpression = in.ValueExpression
+	return nil
+}
+
+// Convert_v1alpha1_ExtraMapping_To_apiserver_ExtraMapping is an autogenerated conversion function.
+func Convert_v1alpha1_ExtraMapping_To_apiserver_ExtraMapping(in *ExtraMapping, out *apiserver.ExtraMapping, s conversion.Scope) error {
+	return autoConvert_v1alpha1_ExtraMapping_To_apiserver_ExtraMapping(in, out, s)
+}
+
+func autoConvert_apiserver_ExtraMapping_To_v1alpha1_ExtraMapping(in *apiserver.ExtraMapping, out *ExtraMapping, s conversion.Scope) error {
+	out.Key = in.Key
+	out.ValueExpression = in.ValueExpression
+	return nil
+}
+
+// Convert_apiserver_ExtraMapping_To_v1alpha1_ExtraMapping is an autogenerated conversion function.
+func Convert_apiserver_ExtraMapping_To_v1alpha1_ExtraMapping(in *apiserver.ExtraMapping, out *ExtraMapping, s conversion.Scope) error {
+	return autoConvert_apiserver_ExtraMapping_To_v1alpha1_ExtraMapping(in, out, s)
+}
+
 func autoConvert_v1alpha1_Issuer_To_apiserver_Issuer(in *Issuer, out *apiserver.Issuer, s conversion.Scope) error {
 	out.URL = in.URL
 	out.CertificateAuthority = in.CertificateAuthority
@@ -524,6 +610,7 @@ func autoConvert_v1alpha1_JWTAuthenticator_To_apiserver_JWTAuthenticator(in *JWT
 	if err := Convert_v1alpha1_ClaimMappings_To_apiserver_ClaimMappings(&in.ClaimMappings, &out.ClaimMappings, s); err != nil {
 		return err
 	}
+	out.UserValidationRules = *(*[]apiserver.UserValidationRule)(unsafe.Pointer(&in.UserValidationRules))
 	return nil
 }
 
@@ -540,6 +627,7 @@ func autoConvert_apiserver_JWTAuthenticator_To_v1alpha1_JWTAuthenticator(in *api
 	if err := Convert_apiserver_ClaimMappings_To_v1alpha1_ClaimMappings(&in.ClaimMappings, &out.ClaimMappings, s); err != nil {
 		return err
 	}
+	out.UserValidationRules = *(*[]UserValidationRule)(unsafe.Pointer(&in.UserValidationRules))
 	return nil
 }
 
@@ -551,6 +639,7 @@ func Convert_apiserver_JWTAuthenticator_To_v1alpha1_JWTAuthenticator(in *apiserv
 func autoConvert_v1alpha1_PrefixedClaimOrExpression_To_apiserver_PrefixedClaimOrExpression(in *PrefixedClaimOrExpression, out *apiserver.PrefixedClaimOrExpression, s conversion.Scope) error {
 	out.Claim = in.Claim
 	out.Prefix = (*string)(unsafe.Pointer(in.Prefix))
+	out.Expression = in.Expression
 	return nil
 }
 
@@ -562,6 +651,7 @@ func Convert_v1alpha1_PrefixedClaimOrExpression_To_apiserver_PrefixedClaimOrExpr
 func autoConvert_apiserver_PrefixedClaimOrExpression_To_v1alpha1_PrefixedClaimOrExpression(in *apiserver.PrefixedClaimOrExpression, out *PrefixedClaimOrExpression, s conversion.Scope) error {
 	out.Claim = in.Claim
 	out.Prefix = (*string)(unsafe.Pointer(in.Prefix))
+	out.Expression = in.Expression
 	return nil
 }
 
@@ -678,6 +768,28 @@ func Convert_apiserver_UDSTransport_To_v1alpha1_UDSTransport(in *apiserver.UDSTr
 	return autoConvert_apiserver_UDSTransport_To_v1alpha1_UDSTransport(in, out, s)
 }
 
+func autoConvert_v1alpha1_UserValidationRule_To_apiserver_UserValidationRule(in *UserValidationRule, out *apiserver.UserValidationRule, s conversion.Scope) error {
+	out.Expression = in.Expression
+	out.Message = in.Message
+	return nil
+}
+
+// Convert_v1alpha1_UserValidationRule_To_apiserver_UserValidationRule is an autogenerated conversion function.
+func Convert_v1alpha1_UserValidationRule_To_apiserver_UserValidationRule(in *UserValidationRule, out *apiserver.UserValidationRule, s conversion.Scope) error {
+	return autoConvert_v1alpha1_UserValidationRule_To_apiserver_UserValidationRule(in, out, s)
+}
+
+func autoConvert_apiserver_UserValidationRule_To_v1alpha1_UserValidationRule(in *apiserver.UserValidationRule, out *UserValidationRule, s conversion.Scope) error {
+	out.Expression = in.Expression
+	out.Message = in.Message
+	return nil
+}
+
+// Convert_apiserver_UserValidationRule_To_v1alpha1_UserValidationRule is an autogenerated conversion function.
+func Convert_apiserver_UserValidationRule_To_v1alpha1_UserValidationRule(in *apiserver.UserValidationRule, out *UserValidationRule, s conversion.Scope) error {
+	return autoConvert_apiserver_UserValidationRule_To_v1alpha1_UserValidationRule(in, out, s)
+}
+
 func autoConvert_v1alpha1_WebhookConfiguration_To_apiserver_WebhookConfiguration(in *WebhookConfiguration, out *apiserver.WebhookConfiguration, s conversion.Scope) error {
 	out.AuthorizedTTL = in.AuthorizedTTL
 	out.UnauthorizedTTL = in.UnauthorizedTTL
diff --git a/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/zz_generated.deepcopy.go b/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/zz_generated.deepcopy.go
index 5121d05e7d3..932af612707 100644
--- a/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/zz_generated.deepcopy.go
+++ b/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/zz_generated.deepcopy.go
@@ -168,6 +168,12 @@ func (in *ClaimMappings) DeepCopyInto(out *ClaimMappings) {
 	*out = *in
 	in.Username.DeepCopyInto(&out.Username)
 	in.Groups.DeepCopyInto(&out.Groups)
+	out.UID = in.UID
+	if in.Extra != nil {
+		in, out := &in.Extra, &out.Extra
+		*out = make([]ExtraMapping, len(*in))
+		copy(*out, *in)
+	}
 	return
 }
 
@@ -181,6 +187,22 @@ func (in *ClaimMappings) DeepCopy() *ClaimMappings {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *ClaimOrExpression) DeepCopyInto(out *ClaimOrExpression) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ClaimOrExpression.
+func (in *ClaimOrExpression) DeepCopy() *ClaimOrExpression {
+	if in == nil {
+		return nil
+	}
+	out := new(ClaimOrExpression)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *ClaimValidationRule) DeepCopyInto(out *ClaimValidationRule) {
 	*out = *in
@@ -267,6 +289,22 @@ func (in *EgressSelectorConfiguration) DeepCopyObject() runtime.Object {
 	return nil
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *ExtraMapping) DeepCopyInto(out *ExtraMapping) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ExtraMapping.
+func (in *ExtraMapping) DeepCopy() *ExtraMapping {
+	if in == nil {
+		return nil
+	}
+	out := new(ExtraMapping)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *Issuer) DeepCopyInto(out *Issuer) {
 	*out = *in
@@ -298,6 +336,11 @@ func (in *JWTAuthenticator) DeepCopyInto(out *JWTAuthenticator) {
 		copy(*out, *in)
 	}
 	in.ClaimMappings.DeepCopyInto(&out.ClaimMappings)
+	if in.UserValidationRules != nil {
+		in, out := &in.UserValidationRules, &out.UserValidationRules
+		*out = make([]UserValidationRule, len(*in))
+		copy(*out, *in)
+	}
 	return
 }
 
@@ -437,6 +480,22 @@ func (in *UDSTransport) DeepCopy() *UDSTransport {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *UserValidationRule) DeepCopyInto(out *UserValidationRule) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new UserValidationRule.
+func (in *UserValidationRule) DeepCopy() *UserValidationRule {
+	if in == nil {
+		return nil
+	}
+	out := new(UserValidationRule)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *WebhookConfiguration) DeepCopyInto(out *WebhookConfiguration) {
 	*out = *in
diff --git a/staging/src/k8s.io/apiserver/pkg/apis/apiserver/zz_generated.deepcopy.go b/staging/src/k8s.io/apiserver/pkg/apis/apiserver/zz_generated.deepcopy.go
index 87b41f7ef6b..77e5c314219 100644
--- a/staging/src/k8s.io/apiserver/pkg/apis/apiserver/zz_generated.deepcopy.go
+++ b/staging/src/k8s.io/apiserver/pkg/apis/apiserver/zz_generated.deepcopy.go
@@ -168,6 +168,12 @@ func (in *ClaimMappings) DeepCopyInto(out *ClaimMappings) {
 	*out = *in
 	in.Username.DeepCopyInto(&out.Username)
 	in.Groups.DeepCopyInto(&out.Groups)
+	out.UID = in.UID
+	if in.Extra != nil {
+		in, out := &in.Extra, &out.Extra
+		*out = make([]ExtraMapping, len(*in))
+		copy(*out, *in)
+	}
 	return
 }
 
@@ -181,6 +187,22 @@ func (in *ClaimMappings) DeepCopy() *ClaimMappings {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *ClaimOrExpression) DeepCopyInto(out *ClaimOrExpression) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ClaimOrExpression.
+func (in *ClaimOrExpression) DeepCopy() *ClaimOrExpression {
+	if in == nil {
+		return nil
+	}
+	out := new(ClaimOrExpression)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *ClaimValidationRule) DeepCopyInto(out *ClaimValidationRule) {
 	*out = *in
@@ -267,6 +289,22 @@ func (in *EgressSelectorConfiguration) DeepCopyObject() runtime.Object {
 	return nil
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *ExtraMapping) DeepCopyInto(out *ExtraMapping) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ExtraMapping.
+func (in *ExtraMapping) DeepCopy() *ExtraMapping {
+	if in == nil {
+		return nil
+	}
+	out := new(ExtraMapping)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *Issuer) DeepCopyInto(out *Issuer) {
 	*out = *in
@@ -298,6 +336,11 @@ func (in *JWTAuthenticator) DeepCopyInto(out *JWTAuthenticator) {
 		copy(*out, *in)
 	}
 	in.ClaimMappings.DeepCopyInto(&out.ClaimMappings)
+	if in.UserValidationRules != nil {
+		in, out := &in.UserValidationRules, &out.UserValidationRules
+		*out = make([]UserValidationRule, len(*in))
+		copy(*out, *in)
+	}
 	return
 }
 
@@ -437,6 +480,22 @@ func (in *UDSTransport) DeepCopy() *UDSTransport {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *UserValidationRule) DeepCopyInto(out *UserValidationRule) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new UserValidationRule.
+func (in *UserValidationRule) DeepCopy() *UserValidationRule {
+	if in == nil {
+		return nil
+	}
+	out := new(UserValidationRule)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *WebhookConfiguration) DeepCopyInto(out *WebhookConfiguration) {
 	*out = *in