HIGH7.8

PYSEC-2025-113

Quick fix

PYSEC-2025-113 — fickling: upgrade to the fixed version with the command below.

pip install --upgrade 'fickling>=0.1.6'

Details

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/fickling

Introduced in: 0Fixed in: 0.1.6

Fixpip install --upgrade 'fickling>=0.1.6'

References

https://github.com/trailofbits/fickling/pull/108[FIX]
https://github.com/trailofbits/fickling/pull/187[FIX]
https://github.com/trailofbits/fickling/security/advisories/GHSA-r7v6-mfhq-g3m2[EVIDENCE]