CVE-2026-56315

CRITICAL EPSS 50.6%

Published Jun 23, 20261w ago · Modified Jun 23, 20261w ago

9.3 CVSS 4.0

Critical

Published Jun 23, 2026 1w ago

Last Modified Jun 23, 2026 1w ago

Description

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.

CVSS Details

Base Score

9.3

Exploitability

—

Impact

—

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

50.6% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-184

References 2

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.