CVE-2026-56315

critical · 9.3

picklescan before 1.0.4 fails to block at least seven Python standard library modules (including uuid, _osx_support, _aix_support, _pyrepl.pager, and imaplib) exposing eight functions that provide direct arbitrary command execution. Attackers can craft malicious pickle files importing these unblocked modules to achieve remote code execution while bypassing picklescan's safety validation entirely.

9.3

CVSS

1.1%

EPSS (exploit prob.)

65th

EPSS percentile

2026-06-23

Published

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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:X/V:X/RE:X/U:X

Weaknesses

CWE-184

References

https://github.com/mmaitre314/picklescan/security/advisories/GHSA-g38g-8gr9-h9xp
https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-unblocked-standard-library-modules
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-g38g-8gr9-h9xp

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-56315