CVE-2026-22609 HIGH

CVE-2026-22609: Fickling has Static Analysis Bypass via Incomplete Dangerous Module Blocklist

Vendor Trailofbits
Product fickling
Weakness CWE-184
Published January 10, 2026
Last update January 14, 2026
View on NVD All CVEs

CVSS base score

8.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

Fickling is a Python pickling decompiler and static analyzer. Prior to version 0.1.7, the unsafe_imports() method in Fickling's static analyzer fails to flag several high-risk Python modules that can be used for arbitrary code execution. Malicious pickles importing these modules will not be detected as unsafe, allowing attackers to bypass Fickling's primary static safety checks. This issue has been patched in version 0.1.7.

Key dates

02Disclosure timeline

January 10, 2026 CVE published
January 14, 2026 Record updated