Python
CVE-2026-22606
HIGH
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionGitHub Advisory
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.
AnalysisAI
Fickling's incomplete pickle analysis allows attackers to bypass security checks by using Python's runpy module to execute arbitrary code. Versions through 0.1.6 misclassify dangerous runpy-based payloads as merely suspicious rather than malicious, enabling code execution on systems that rely on Fickling to validate pickle safety. Public exploit code exists for this vulnerability, though a patch is available in version 0.1.7.
Technical ContextAI
Affects Fickling. 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
RemediationAI
A vendor patch is available — apply it immediately. Fixed in version 0.1.7..
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Same weakness CWE-184 – Incomplete List of Disallowed Inputs
View allSame technique Deserialization
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External POC / Exploit Code
Leaving vuln.today
GHSA-wfq2-52f7-7qvj