CVE-2026-27794: PYSEC-2026-2574 - LangGraph: BaseCache Deserialization of Untrusted Data may lead to Remote Code Execution

CVE-2026-27794 · Severity: low · CVSS 3.1 · Published 2026-07-13

LangGraph: BaseCache Deserialization of Untrusted Data may lead to Remote Code Execution

Technologies: langgraph-checkpoint (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2026-27794 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-27794 being exploited in the wild.
How severe is CVE-2026-27794?
Low severity, with a CVSS score of 3.1, published 13 July 2026.
Which products and versions are affected?
langgraph-checkpoint (PyPI) ECOSYSTEM:introduced=0,fixed=4.0.0.
Is there a fix for CVE-2026-27794?
Yes. langgraph-checkpoint (PyPI): upgrade to 4.0.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-27794?
Check whether you run langgraph-checkpoint (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

  • langgraph-checkpoint (PyPI): upgrade to 4.0.0 or later
    pip install "langgraph-checkpoint>=4.0.0"

Affected products

  • langgraph-checkpoint (PyPI) ECOSYSTEM:introduced=0,fixed=4.0.0

Identifiers

  • CVE-2026-27794
  • GHSA-mhr3-j7m5-c7c9
  • PYSEC-2026-2574

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