CVE-2025-67748

HighCVSS 7.8/10Last modified Oct 7, 2026

Description

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-94 CWE-184 CWE-502

Affected software

Vendor	Product	Versions
trailofbits	fickling	< 0.1.6

References

https://github.com/trailofbits/fickling/pull/108Issue Tracking, Patch
https://github.com/trailofbits/fickling/pull/187Issue Tracking, Patch
https://github.com/trailofbits/fickling/security/advisories/GHSA-r7v6-mfhq-g3m2Exploit, Vendor Advisory

Timeline

Published: Dec 16, 2025
Last modified: Oct 7, 2026
NVD status: Analyzed

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