CVE-2026-56315
picklescan - Remote Code Execution via Unblocked Standard Library Modules
- State
- Published
- Severity
- 9.3 Critical
- Published
- Jun 23, 2026
- Updated
- Jun 23, 2026
- Reserved
- Jun 20, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | 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 | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-184 Incomplete List of Disallowed Inputs
Affected Products
| Product | Versions |
|---|---|
picklescanpicklescan |
|
References
- GitHub Security Advisory (GHSA-g38g-8gr9-h9xp)vendor-advisory
- VulnCheck Advisory: picklescan - Remote Code Execution via Unblocked Standard Library Modulesthird-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.