MEDIUM5.2
PYSEC-2026-1514
LangChain pickle deserialization of untrusted data
Quick fix
PYSEC-2026-1514 — langchain-community: upgrade to the fixed version with the command below.
pip install --upgrade 'langchain-community>=0.2.4'Details
A vulnerability in the `FAISS.deserialize_from_bytes` function of langchain-ai/langchain allows for pickle deserialization of untrusted data. This can lead to the execution of arbitrary commands via the `os.system` function. The issue affects versions prior to 0.2.4.
Are you affected?
Enter the version of the package you're using.
Affected packages
PyPI/langchain-community
Introduced in:
0Fixed in: 0.2.4Fix
pip install --upgrade 'langchain-community>=0.2.4'References
- https://nvd.nist.gov/vuln/detail/CVE-2024-5998[ADVISORY]
- https://github.com/langchain-ai/langchain/commit/604dfe2d99246b0c09f047c604f0c63eafba31e7[WEB]
- https://github.com/langchain-ai/langchain/commit/77209f315efd13442ec51c67719ba37dfaa44511[WEB]
- https://github.com/langchain-ai/langchain[PACKAGE]
- https://huntr.com/bounties/fa3a2753-57c3-4e08-a176-d7a3ffda28fe[WEB]
- https://pypi.org/project/langchain-community[PACKAGE]
- https://github.com/advisories/GHSA-f2jm-rw3h-6phg[ADVISORY]