CVE-2025-67748

Fickling is a Python pickling decompiler and static analyzer. Versions prior to 0.1.6 had a bypass caused by `pty` missing from the block list of unsafe module imports. This led to unsafe pickles based on `pty.spawn()` being incorrectly flagged as `LIKELY_SAFE`, and was fixed in version 0.1.6. This impacted any user or system that used Fickling to vet pickle files for security issues.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/trailofbits/fickling/pull/108	Issue Tracking Patch
https://github.com/trailofbits/fickling/pull/187	Issue Tracking Patch
https://github.com/trailofbits/fickling/security/advisories/GHSA-r7v6-mfhq-g3m2	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

07 Oct 2026, 19:10

Type	Values Removed	Values Added
Summary		(es) Fickling es un descompilador de pickling de Python y analizador estático. Las versiones anteriores a la 0.1.6 tenían un bypass causado por la ausencia de 'pty' en la lista de bloqueo de importaciones de módulos inseguros. Esto llevó a que los pickles inseguros basados en 'pty.spawn()' fueran incorrectamente marcados como 'LIKELY_SAFE', y fue corregido en la versión 0.1.6. Esto impactó a cualquier usuario o sistema que utilizaba Fickling para examinar archivos pickle en busca de problemas de seguridad.

Information

Published : 2025-12-16 01:15

Updated : 2026-10-07 19:10

NVD link : CVE-2025-67748

Mitre link : CVE-2025-67748

CVE.ORG link : CVE-2025-67748

JSON object : View

Products Affected

trailofbits

fickling

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

CWE-184

Incomplete List of Disallowed Inputs

CWE-502

Deserialization of Untrusted Data

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