CVE-2025-71375 | THREATINT

Description

picklescan before 0.0.34 fails to detect the _operator.methodcaller built-in function when scanning pickle files for malicious code. Attackers can craft malicious pickle payloads using _operator.methodcaller that evade detection and execute arbitrary code when loaded by pickle.load().

PUBLISHED Reserved 2026-06-20 | Published 2026-07-04 | Updated 2026-07-07 | Assigner VulnCheck

HIGH: 7.6CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

HIGH: 8.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Problem types

Deserialization of Untrusted Data

Product status

Default status

unaffected

Any version before 0.0.34

affected

0.0.34 (semver)

unaffected

Credits

CoolwindHF reporter

References

github.com/...lescan/security/advisories/GHSA-955r-x9j8-7rhh exploit

github.com/...lescan/security/advisories/GHSA-955r-x9j8-7rhh (GitHub Security Advisory (GHSA-955r-x9j8-7rhh)) vendor-advisory

www.vulncheck.com/...ode-execution-via-operator-methodcaller (VulnCheck Advisory: picklescan - Undetected Remote Code Execution via _operator.methodcaller) third-party-advisory

cve.org (CVE-2025-71375)

nvd.nist.gov (CVE-2025-71375)

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