CVE-2026-22607

High

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.

SeverityHigh

CVSS7.8

Exploit probability—

ProductTrailofbits Fickling

PublishedJan 10, 2026

First seenJan 10, 2026

Weakness typeCWE-184CWE-184 CWE-502Deserialization of untrusted data

How to fix

Update

trailofbits fickling0.1.7 or later
fickling0.1.7 or later

Affected products

Product	Affected versions	Fixed in
trailofbits fickling	v < 0.1.7	0.1.7
ficklingPyPI	v < 0.1.7	0.1.7

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