CVE-2026-22607
Fickling versions up to and including 0.1.6 do not treat Python's cProfile module as unsafe.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Fickling is a Python pickling decompiler and static analyzer. Fickling versions up to and including 0.1.6 do not treat Python's cProfile module as unsafe. Because of this, a malicious pickle that uses cProfile.run() is classified as SUSPICIOUS instead of OVERTLY_MALICIOUS. If a user relies on Fickling's output to decide whether a pickle is safe to deserialize, this misclassification can lead them to execute attacker-controlled code on their system. This affects any workflow or product that uses Fickling as a security gate for pickle deserialization. This issue has been patched in version 0.1.7.
- CVSS 4.0
- 8.9 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.53% probability · 43th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-184, CWE-502
- Affected
- trailofbits/fickling
- Source
- security-advisories@github.com
References
- https://github.com/trailofbits/fickling/commit/dc8ae12966edee27a78fe05c5745171a2b138d43Patch
- https://github.com/trailofbits/fickling/releases/tag/v0.1.7Release Notes
- https://github.com/trailofbits/fickling/security/advisories/GHSA-p523-jq9w-64x9Exploit, Vendor Advisory
- https://github.com/trailofbits/fickling/security/advisories/GHSA-p523-jq9w-64x9Exploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.