CVE-2023-39631: Langchain vulnerable to arbitrary code execution via the evaluate function in the numexpr library

CVE-2023-39631 · Severity: low · CVSS 3.1 · Published 2023-09-01

An issue in LanChain-ai Langchain v.0.0.245 allows a remote attacker to execute arbitrary code via the evaluate function in the numexpr library.

Technologies: langchain (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2023-39631 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2023-39631 being exploited in the wild.
How severe is CVE-2023-39631?
Low severity, with a CVSS score of 3.1, published 1 September 2023.
Which products and versions are affected?
langchain (PyPI) ECOSYSTEM:introduced=0,fixed=0.0.308; numexpr (PyPI) ECOSYSTEM:introduced=0,fixed=2.8.5.
Is there a fix for CVE-2023-39631?
Yes. langchain (PyPI): upgrade to 0.0.308 or later; numexpr (PyPI): upgrade to 2.8.5 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2023-39631?
Check whether you run langchain (PyPI) or numexpr (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 0.0.308 or later
    pip install "langchain>=0.0.308"
  • numexpr (PyPI): upgrade to 2.8.5 or later
    pip install "numexpr>=2.8.5"

Affected products

  • langchain (PyPI) ECOSYSTEM:introduced=0,fixed=0.0.308
  • numexpr (PyPI) ECOSYSTEM:introduced=0,fixed=2.8.5

Identifiers

  • CVE-2023-39631
  • GHSA-f73w-4m7g-ch9x
  • PYSEC-2023-162
  • PYSEC-2023-163

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