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Bumps [mistune](https://github.com/lepture/mistune) from 3.2.1 to 3.3.0. <details> <summary>Release notes</summary> <p><em>Sourced from <a href="https://github.com/lepture/mistune/releases">mistune's releases</a>.</em></p> <blockquote> <h2>v3.3.0</h2> <h3> 🐞 Bug Fixes</h3> <ul> <li>Resolve O(n^2) DoS in parse_link_text (CWE-400) - by <strong>bhanugoudm041</strong> <a href="https://github.com/lepture/mistune/commit/b6b499d"><!-- raw HTML omitted -->(b6b49)<!-- raw HTML omitted --></a></li> <li>Resolve O(n^2) DoS in parse_link_text (CWE-400)-Type handling/testing done - by <strong>bhanugoudm041</strong> <a href="https://github.com/lepture/mistune/commit/b3af85d"><!-- raw HTML omitted -->(b3af8)<!-- raw HTML omitted --></a></li> <li><strong>block</strong>: Avoid quadratic ref link scans - by <a href="https://github.com/lepture"><code>@lepture</code></a> <a href="https://github.com/lepture/mistune/commit/2b04d7b"><!-- raw HTML omitted -->(2b04d)<!-- raw HTML omitted --></a></li> <li><strong>cli</strong>: Add entrypoint and utf-8 output - by <a href="https://github.com/lepture"><code>@lepture</code></a> <a href="https://github.com/lepture/mistune/commit/2f2449d"><!-- raw HTML omitted -->(2f244)<!-- raw HTML omitted --></a></li> <li><strong>directives</strong>: Constrain include targets - by <a href="https://github.com/lepture"><code>@lepture</code></a> <a href="https://github.com/lepture/mistune/commit/1bef343"><!-- raw HTML omitted -->(1bef3)<!-- raw HTML omitted --></a></li> <li><strong>formatting</strong>: Avoid quadratic marker scans - by <a href="https://github.com/lepture"><code>@lepture</code></a> <a href="https://github.com/lepture/mistune/commit/96d0f57"><!-- raw HTML omitted -->(96d0f)<!-- raw HTML omitted --></a></li> <li><strong>image</strong>: Validate figure width option - by <a href="https://github.com/lepture"><code>@lepture</code></a> <a href="https://github.com/lepture/mistune/commit/e3e51de"><!-- raw HTML omitted -->(e3e51)<!-- raw HTML omitted --></a></li> <li><strong>inline</strong>: Avoid bracket parsing DoS - by <a href="https://github.com/lepture"><code>@lepture</code></a> <a href="https://github.com/lepture/mistune/commit/25f2503"><!-- raw HTML omitted -->(25f25)<!-- raw HTML omitted --></a></li> <li><strong>math</strong>: Reject currency patterns and cross-line matches in inline math - by <a href="https://github.com/geopanther"><code>@geopanther</code></a> <a href="https://github.com/lepture/mistune/commit/566e173"><!-- raw HTML omitted -->(566e1)<!-- raw HTML omitted --></a></li> <li><strong>math</strong>: Support display and backtick math - by <a href="https://github.com/lepture"><code>@lepture</code></a> <a href="https://github.com/lepture/mistune/commit/1141eec"><!-- raw HTML omitted -->(1141e)<!-- raw HTML omitted --></a></li> <li><strong>renderer</strong>: Render plugin list and table nodes - by <a href="https://github.com/lepture"><code>@lepture</code></a> <a href="https://github.com/lepture/mistune/commit/614b019"><!-- raw HTML omitted -->(614b0)<!-- raw HTML omitted --></a></li> <li><strong>renderer</strong>: Block encoded unsafe URL schemes - by <a href="https://github.com/lepture"><code>@lepture</code></a> <a href="https://github.com/lepture/mistune/commit/c7101fc"><!-- raw HTML omitted -->(c7101)<!-- raw HTML omitted --></a></li> <li><strong>toc</strong>: Avoid generated id collisions - by <a href="https://github.com/lepture"><code>@lepture</code></a> <a href="https://github.com/lepture/mistune/commit/c4093c4"><!-- raw HTML omitted -->(c4093)<!-- raw HTML omitted --></a></li> </ul> <h3> 🏎 Performance</h3> <ul> <li>Improve performance - by <a href="https://github.com/lepture"><code>@lepture</code></a> <a href="https://github.com/lepture/mistune/commit/bf95c32"><!-- raw HTML omitted -->(bf95c)<!-- raw HTML omitted --></a></li> </ul> <h5> <a href="https://github.com/lepture/mistune/compare/v3.2.1...v3.3.0">View changes on GitHub</a></h5> </blockquote> </details> <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/lepture/mistune/blob/main/docs/changes.rst">mistune's changelog</a>.</em></p> <blockquote> <h2>Version 3.3.0</h2> <p><strong>Released on Jun 21, 2026</strong></p> <ul> <li>Improve CommonMark compatibility and parser performance.</li> <li>Add command line entrypoint with UTF-8 output.</li> <li>Support display and backtick math.</li> <li>Render plugin list and table nodes in Markdown renderer.</li> <li>Escape leading block markers in Markdown renderer.</li> <li>Fix RST renderer for block quotes nested in lists.</li> <li>Avoid generated heading ID collisions in TOC.</li> <li>Harden URL, image, figure, and include directive handling.</li> <li>Fix quadratic scans in inline links, reference links, and formatting markers.</li> <li>Fix math escaping, currency pattern matching, and cross-line matching.</li> </ul> </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href="15c3b79325"><code>15c3b79</code></a> chore: release 3.3.0</li> <li><a href="bdc01ade17"><code>bdc01ad</code></a> tests: increase run time on pypy</li> <li><a href="7cf181483e"><code>7cf1814</code></a> tests: increase run time for pypy</li> <li><a href="6dfdc3dae4"><code>6dfdc3d</code></a> tests: add more tests</li> <li><a href="17c50f6c05"><code>17c50f6</code></a> chore: fix mypy issues</li> <li><a href="63abe4b8e9"><code>63abe4b</code></a> chore: use ruff check and format</li> <li><a href="e6c1b18446"><code>e6c1b18</code></a> chore: resolve mypy issues</li> <li><a href="dcf89020c1"><code>dcf8902</code></a> test(math): cover escaped math output</li> <li><a href="c4093c4742"><code>c4093c4</code></a> fix(toc): avoid generated id collisions</li> <li><a href="e3e51de9cf"><code>e3e51de</code></a> fix(image): validate figure width option</li> <li>Additional commits viewable in <a href="https://github.com/lepture/mistune/compare/v3.2.1...v3.3.0">compare view</a></li> </ul> </details> <br /> [](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`. 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🦜🍎️ LangChain Core
Looking for the JS/TS version? Check out LangChain.js.
To help you ship LangChain apps to production faster, check out LangSmith. LangSmith is a unified developer platform for building, testing, and monitoring LLM applications.
Quick Install
uv add langchain-core
🤔 What is this?
LangChain Core contains the base abstractions that power the LangChain ecosystem.
These abstractions are designed to be as modular and simple as possible.
The benefit of having these abstractions is that any provider can implement the required interface and then easily be used in the rest of the LangChain ecosystem.
⛰️ Why build on top of LangChain Core?
The LangChain ecosystem is built on top of langchain-core. Some of the benefits:
- Modularity: We've designed Core around abstractions that are independent of each other, and not tied to any specific model provider.
- Stability: We are committed to a stable versioning scheme, and will communicate any breaking changes with advance notice and version bumps.
- Battle-tested: Core components have the largest install base in the LLM ecosystem, and are used in production by many companies.
📖 Documentation
For full documentation, see the API reference. For conceptual guides, tutorials, and examples on using LangChain, see the LangChain Docs. You can also chat with the docs using Chat LangChain.
📕 Releases & Versioning
See our Releases and Versioning policies.
💁 Contributing
As an open-source project in a rapidly developing field, we are extremely open to contributions, whether it be in the form of a new feature, improved infrastructure, or better documentation.
For detailed information on how to contribute, see the Contributing Guide.
Resources
- LangChain Academy — comprehensive, free courses on LangChain libraries and products, made by the LangChain team
- Code of Conduct — community guidelines and standards