CVE-2024-2965: PYSEC-2026-2561 - Denial of service in langchain-community

CVE-2024-2965 · Severity: low · CVSS 3.1 · Published 2026-07-13

LangChain is a popular framework for building AI applications with document loaders and parsers. The SitemapLoader component lacks protection against self-referential sitemaps, allowing an attacker to trigger infinite recursion that crashes the Python process, disrupting services that rely on this functionality.

Technologies: langchain (PyPI), langchain-community (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2024-2965 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2024-2965 being exploited in the wild.
How severe is CVE-2024-2965?
Low severity, with a CVSS score of 3.1, published 13 July 2026.
Which products and versions are affected?
langchain (PyPI) ECOSYSTEM:introduced=0,fixed=0.2.5, GIT:introduced=0,fixed=73c42306745b0831aa6fe7fe4eeb70d2c2d87a82|ECOSYSTEM:introduced=0,fixed=0.2.5; langchain-community (PyPI) ECOSYSTEM:introduced=0,fixed=0.2.5.
Is there a fix for CVE-2024-2965?
Yes. langchain (PyPI): upgrade to 0.2.5 or later; langchain-community (PyPI): upgrade to 0.2.5 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2024-2965 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2024-2965?
Check whether you run langchain (PyPI) or langchain-community (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • langchain (PyPI): upgrade to 0.2.5 or later
    pip install "langchain>=0.2.5"
  • langchain-community (PyPI): upgrade to 0.2.5 or later
    pip install "langchain-community>=0.2.5"

Technical details

The vulnerability exists in the parse_sitemap method of the SitemapLoader document loader in langchain-community, which fails to detect or prevent infinite recursion when a sitemap URL references itself. An attacker can craft a malicious sitemap that points to itself, causing the parser to enter an infinite loop and exhaust Python's recursion depth limit, resulting in a crash. The vulnerability is triggered when the loader processes the sitemap without depth restrictions or cycle detection. This affects all versions of langchain-community below 0.2.5 and langchain below 0.2.5, and has been patched by adding depth restrictions to sitemap parsing (CVE-2024-2965).

Affected products

  • LangChain langchain-community below 0.2.5
  • LangChain langchain below 0.2.5

Identifiers

  • CVE-2024-2965
  • GHSA-3hjh-jh2h-vrg6
  • PYSEC-2024-118
  • PYSEC-2026-2561

Timeline

  • 2024-06-06: disclosed: Vulnerability disclosed via GitHub Advisory GHSA-3hjh-jh2h-vrg6
  • 2024-06-14: patched: Fix merged in PR #22903 restricting sitemap parsing depth

References

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