CVE-2026-22606

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 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.

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

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.