CVE-2026-22606: Trailofbits Fickling

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Fickling is a Python pickling decompiler and static analyzer. Fickling versions up to and including 0.1.6 do not treat Python’s runpy module as unsafe. Because of this, a malicious pickle that uses runpy.run_path() or runpy.run_module() 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.

Affected products

• Trailofbits Fickling: before 0.1.7 (fixed in 0.1.7)

Published 2026-01-10. Last modified 2026-06-17.