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Vulnerability record · CVE-2025-71352 · published 30 June 2026

CVE-2025-71352: picklescan before 0.0.29 fails to detect the built-in Python trace.Trace.runctx function when used in pickle f…

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.

7.6 CVSS 4.0 High EPSS 0.64% · top 51.6% CWE-693 · CWE-693 Deferred
7.6CVSS 4.0 base score
0.64%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
1 Jul 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-g344-hcph-8vgg
https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-undetected-trace-trace-runctx-in-pickle-files
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-g344-hcph-8vgg

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Source: NIST National Vulnerability Database (record CVE-2025-71352), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.