CVE-2025-71349

picklescan - Arbitrary Code Execution via Undetected trace.Trace.run in Pickle Files

State: Published
Severity: 7.6 High
Published: Jun 30, 2026
Updated: Jul 1, 2026
Reserved: Jun 20, 2026

Description

picklescan before 0.0.29 fails to detect the built-in trace.Trace.run function when analyzing pickle files, allowing attackers to embed undetected malicious code. Remote attackers can craft malicious pickle files using trace.Trace.run in the reduce method to achieve arbitrary code execution when pickle.load processes the file.

Scores

CVSS	Score	Vector	Source
4.0	7.6 High	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	VulnCheck
3.1	8.1 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N	VulnCheck

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
picklescanpicklescan	before 0.0.29Affected 0.0.29Not affected

References

GitHub Security Advisory (GHSA-5qwp-399c-mjwf)vendor-advisory
VulnCheck Advisory: picklescan - Arbitrary Code Execution via Undetected trace.Trace.run in Pickle Filesthird-party-advisory

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