CVE-2025-67747Fickling is a Python pickling decompiler and static analyzer.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-184, CWE-502
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Oct 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
trailofbits fickling trailofbits:fickling | before 0.1.6 | NVD |
References
- https://github.com/trailofbits/fickling/commit/4e34561301bda1450268d1d7b0b2b151de33b913patch
- https://github.com/trailofbits/fickling/pull/186issue-tracking
- https://github.com/trailofbits/fickling/releases/tag/v0.1.6release-notes
- https://github.com/trailofbits/fickling/security/advisories/GHSA-565g-hwwr-4pp3exploit, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.