CVE-2025-71352 | picklescan before 0.0.29 fails to detect the built-in Python… | CVSS 8.1 HIGH

Description

picklescan before 0.0.29 fails to detect the built-in Python trace.Trace.runctx function when used in pickle file reduce methods, allowing attackers to execute arbitrary code. Remote attackers can craft malicious pickle files with trace.Trace.runctx payloads that bypass picklescan detection and execute code upon pickle.load() invocation.

Metadata

CVE ID: CVE-2025-71352
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-20 12:55 UTC
Published: 2026-06-30 22:08 UTC
Last updated: 2026-06-30 22:08 UTC
Primary CWE: CWE-693
Protection Mechanism Failure
Vendor / Product: picklescan / picklescan
Sources: cve.org · NVD

Severity & Metrics

8.1 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Affected products (1)

Vendor	Product	Platform	Versions
picklescan	picklescan	—	0 < 0.0.29, 0.0.29

Weakness (CWE)

CWE	Source	Description
CWE-693	cna	Protection Mechanism Failure

CVSS scores (2)

Score	Severity	Version	Source	Vector
8.1	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
7.6	HIGH	4.0	cna	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

References (2)

GitHub Security Advisory (GHSA-g344-hcph-8vgg) https://github.com/mmaitre314/picklescan/security/advisories/GHSA-g344-hcph-8vgg
VulnCheck Advisory: picklescan - Remote Code Execution via Undetected trace.Trace.runctx in Pickle Files https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-undetected-trace-trace-runctx-in-pickle-files