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

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-30 · updated 2026-10-12
Weakness: CWE-502

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.

Affected products

picklescan: before 0.0.30 — fixed in 0.0.30

How to fix

Upgrade to a fixed version: picklescan 0.0.30. Check the vendor advisory for mitigations.

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
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-49gj-c84q-6qm9

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