PYSEC-2026-2561
Denial of service in langchain-community
Quick fix
PYSEC-2026-2561 — langchain-community: upgrade to the fixed version with the command below.
pip install --upgrade 'langchain-community>=0.2.5'Details
Denial of service in `SitemapLoader` Document Loader in the `langchain-community` package, affecting versions below 0.2.5. The `parse_sitemap` method, responsible for parsing sitemaps and extracting URLs, lacks a mechanism to prevent infinite recursion when a sitemap URL refers to the current sitemap itself. This oversight allows for the possibility of an infinite loop, leading to a crash by exceeding the maximum recursion depth in Python. This vulnerability can be exploited to occupy server socket/port resources and crash the Python process, impacting the availability of services relying on this functionality.
Are you affected?
Enter the version of the package you're using.
Affected packages
0Fixed in: 0.2.5pip install --upgrade 'langchain-community>=0.2.5'References
- https://nvd.nist.gov/vuln/detail/CVE-2024-2965[ADVISORY]
- https://github.com/langchain-ai/langchain/pull/22903[WEB]
- https://github.com/langchain-ai/langchain/commit/73c42306745b0831aa6fe7fe4eeb70d2c2d87a82[WEB]
- https://github.com/langchain-ai/langchain/commit/9a877c7adbd06f90a2518152f65b562bd90487cc[WEB]
- https://github.com/langchain-ai/langchain[PACKAGE]
- https://github.com/pypa/advisory-database/tree/main/vulns/langchain/PYSEC-2024-118.yaml[WEB]
- https://huntr.com/bounties/90b0776d-9fa6-4841-aac4-09fde5918cae[WEB]
- https://pypi.org/project/langchain-community[PACKAGE]
- https://github.com/advisories/GHSA-3hjh-jh2h-vrg6[ADVISORY]