CVE-2025-71364

picklescan - Arbitrary Code Execution via Undetected asyncio.unix_events._UnixSubprocessTransport._start

State: Published
Severity: 7.6 High
Published: Jul 4, 2026
Updated: Jul 7, 2026
Reserved: Jun 20, 2026

Description

picklescan before 0.0.30 fails to detect the asyncio.unix_events._UnixSubprocessTransport._start function in pickle reduce methods, allowing remote code execution. Attackers can craft malicious pickle files embedding this built-in function that evade detection but execute arbitrary commands when loaded.

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 0.0.30Affected 0.0.30Not affected

References

GitHub Security Advisory (GHSA-q77w-mwjj-7mqx)vendor-advisory
VulnCheck Advisory: picklescan - Arbitrary Code Execution via Undetected asyncio.unix_events._UnixSubprocessTransport._startthird-party-advisory

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