CVE-2025-71320

CRITICAL 9.8

picklescan - Remote Code Execution via Incomplete Disallowed Inputs

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

picklescan before 0.0.33 contains an incomplete deny-list that fails to block pydoc.locate and operator.methodcaller functions, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle files using these unblocked functions to achieve arbitrary code execution when the pickle is deserialized.

CWE	CWE-184
Vendor	picklescan
Product	picklescan
Published	Jun 17, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

picklescan / picklescan

0 < 0.0.33

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/mmaitre314/picklescan/security/advisories/GHSA-84r2-jw7c-4r5q vulncheck.com: https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-incomplete-disallowed-inputs

Credits

🔍 0x-Apollyon