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Vulnerability record · CVE-2026-22608 · published 10 January 2026

CVE-2026-22608: Trailofbits fickling deserialization of untrusted data vulnerability

Trailofbits · Fickling

Fickling is a Python pickling decompiler and static analyzer. Prior to version 0.1.7, both ctypes and pydoc modules aren't explicitly blocked. Even other existing pickle scanning tools (like picklescan) do not block pydoc.locate. Chaining these two together can achieve RCE while the scanner still reports the file as LIKELY_SAFE. This issue has been patched in version 0.1.7.

8.9 CVSS 4.0 High EPSS 0.40% · top 68.5% CWE-184 · CWE-184CWE-502 · Deserialization of untrusted data
8.9CVSS 4.0 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Fickling is a Python pickling decompiler and static analyzer. Prior to version 0.1.7, both ctypes and pydoc modules aren't explicitly blocked. Even other existing pickle scanning tools (like picklescan) do not block pydoc.locate. Chaining these two together can achieve RCE while the scanner still reports the file as LIKELY_SAFE. This issue has been patched in version 0.1.7.

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/trailofbits/fickling/commit/b793563e60a5e039c5837b09d7f4f6b92e6040d1 Patch
https://github.com/trailofbits/fickling/releases/tag/v0.1.7 Release Notes
https://github.com/trailofbits/fickling/security/advisories/GHSA-5hvc-6wx8-mvv4 Vendor Advisory
https://github.com/trailofbits/fickling/security/advisories/GHSA-5hvc-6wx8-mvv4 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-22608), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.