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Vulnerability record · CVE-2025-71373 · published 4 July 2026

CVE-2025-71373: picklescan before 0.0.33 fails to detect operator.methodcaller function calls in pickle files, allowing attack…

picklescan before 0.0.33 fails to detect operator.methodcaller function calls in pickle files, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle payloads using operator.methodcaller that execute arbitrary code when loaded, compromising systems relying on picklescan for validation.

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
6 Jul 2026Last modified by NVD

Description

picklescan before 0.0.33 fails to detect operator.methodcaller function calls in pickle files, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle payloads using operator.methodcaller that execute arbitrary code when loaded, compromising systems relying on picklescan for validation.

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-x843-g5mx-g377
https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-operator-methodcaller-detection-bypass
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-x843-g5mx-g377

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Source: NIST National Vulnerability Database (record CVE-2025-71373), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.