CVE-2025-67747

Fickling is a Python pickling decompiler and static analyzer. Versions prior to 0.1.6 are missing `marshal` and `types` from the block list of unsafe module imports. Fickling started blocking both modules to address this issue. This allows an attacker to craft a malicious pickle file that can bypass fickling since it misses detections for `types.FunctionType` and `marshal.loads`. A user who deserializes such a file, believing it to be safe, would inadvertently execute arbitrary code on their system. This impacts any user or system that uses Fickling to vet pickle files for security issues. The issue was fixed in version 0.1.6.
Configurations

Configuration 1 (hide)

cpe:2.3:a:trailofbits:fickling:*:*:*:*:*:*:*:*

History

02 Jan 2026, 15:59

Type Values Removed Values Added
First Time Trailofbits
Trailofbits fickling
CPE cpe:2.3:a:trailofbits:fickling:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 7.8
References () https://github.com/trailofbits/fickling/commit/4e34561301bda1450268d1d7b0b2b151de33b913 - () https://github.com/trailofbits/fickling/commit/4e34561301bda1450268d1d7b0b2b151de33b913 - Patch
References () https://github.com/trailofbits/fickling/pull/186 - () https://github.com/trailofbits/fickling/pull/186 - Issue Tracking
References () https://github.com/trailofbits/fickling/releases/tag/v0.1.6 - () https://github.com/trailofbits/fickling/releases/tag/v0.1.6 - Release Notes
References () https://github.com/trailofbits/fickling/security/advisories/GHSA-565g-hwwr-4pp3 - () https://github.com/trailofbits/fickling/security/advisories/GHSA-565g-hwwr-4pp3 - Exploit, Third Party Advisory

16 Dec 2025, 01:15

Type Values Removed Values Added
New CVE

Information

Published : 2025-12-16 01:15

Updated : 2026-01-02 15:59


NVD link : CVE-2025-67747

Mitre link : CVE-2025-67747

CVE.ORG link : CVE-2025-67747


JSON object : View

Products Affected

trailofbits

  • fickling
CWE
CWE-184

Incomplete List of Disallowed Inputs

CWE-502

Deserialization of Untrusted Data