PYSEC-2026-1514

See a problem?
Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/langchain-community/PYSEC-2026-1514.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-1514
Aliases
Published
2026-07-07T14:34:41.419579Z
Modified
2026-07-07T17:46:46.983476637Z
Severity
  • 5.2 (Medium) CVSS_V3 - CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L CVSS Calculator
  • 8.4 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
LangChain pickle deserialization of untrusted data
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.

References

Affected packages

PyPI / langchain-community

Package

Name
langchain-community
View open source insights on deps.dev
Purl
pkg:pypi/langchain-community

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.2.4

Affected versions

0.*
0.0.1rc1
0.0.1rc2
0.0.1
0.0.2
0.0.3
0.0.4
0.0.5
0.0.6
0.0.7
0.0.8
0.0.9
0.0.10
0.0.11
0.0.12
0.0.13
0.0.14
0.0.15
0.0.16
0.0.17
0.0.18
0.0.19
0.0.20
0.0.21
0.0.22
0.0.23
0.0.24
0.0.25
0.0.26
0.0.27
0.0.28
0.0.29
0.0.30
0.0.31
0.0.32
0.0.33
0.0.34
0.0.35
0.0.36
0.0.37
0.0.38
0.2.0rc1
0.2.0
0.2.1
0.2.2
0.2.3

Database specific

source
"https://github.com/pypa/advisory-database/blob/main/vulns/langchain-community/PYSEC-2026-1514.yaml"