CVE-2026-22606

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.

• CWE-184
• CWE-502

• https://github.com/trailofbits/fickling/commit/9a2b3f89bd0598b528d62c10a64c1986fcb09f66Patch
• https://github.com/trailofbits/fickling/releases/tag/v0.1.7Release Notes
• https://github.com/trailofbits/fickling/security/advisories/GHSA-wfq2-52f7-7qvjExploit, Vendor Advisory
• https://github.com/trailofbits/fickling/security/advisories/GHSA-wfq2-52f7-7qvjExploit, Vendor Advisory

Published

Jan 10, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

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