Arbitrary Command Execution in Picklescan Affects Python Standard Library Modules
CVE-2026-56315

9.3CRITICAL

Key Information:

Vendor

Picklescan

Status
Picklescan
Vendor
CVE Published:
23 June 2026

What is CVE-2026-56315?

Picklescan versions prior to 1.0.4 present a vulnerability that allows attackers to bypass safety validations by exploiting unblocked Python standard library modules. This oversight enables the execution of arbitrary commands through malicious pickle files, compromising the system's security. The affected modules include uuid, _osx_support, _aix_support, _pyrepl.pager, and imaplib, which can be utilized by threat actors to carry out remote code execution. Immediate updates are recommended to mitigate potential risks.

Affected Version(s)

picklescan 0 < 1.0.4

picklescan 1.0.4

References

https://github.com/mmaitre314/picklescan/security/advisor...
vendor-advisory
https://www.vulncheck.com/advisories/picklescan-remote-co...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

yash2998chhabria
.