High severityOSV Advisory· Published Dec 16, 2025· Updated Dec 16, 2025
Fickling has Code Injection vulnerability via pty.spawn()
CVE-2025-67748
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.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
ficklingPyPI | < 0.1.6 | 0.1.6 |
Affected products
1- Range: master, v0.0.1, v0.0.2, …
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
5- github.com/advisories/GHSA-r7v6-mfhq-g3m2ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-67748ghsaADVISORY
- github.com/trailofbits/fickling/pull/108ghsax_refsource_MISCWEB
- github.com/trailofbits/fickling/pull/187ghsax_refsource_MISCWEB
- github.com/trailofbits/fickling/security/advisories/GHSA-r7v6-mfhq-g3m2ghsax_refsource_CONFIRMWEB
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