What is CVE-2026-22612?

CVE-2026-22612 is a high-severity vulnerability in Trailofbits Fickling, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2026-01-10.

How severe is CVE-2026-22612?

High severity. CVSS v3 base score is 7.8 out of 10.

Deserialization in Trailofbits Fickling

CVE-2026-22612

Fickling is a Python pickling decompiler and static analyzer. Prior to version 0.1.7, Fickling is vulnerable to detection bypass due to "builtins" blindness. This issue has been patched in version 0.1.7.

Vulnerability class: Insecure Deserialization

Published 2026-01-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (22.0th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Trailofbits Fickling — versions < 0.1.7

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

github.com/trailofbits/fickling/security/advisories/GHSA-h4rm-mm56-xf63 (Vendor Advisory)
github.com/trailofbits/fickling/commit/9f309ab834797f280cb5143a2f6f987579fa7cdf (Patch)
github.com/trailofbits/fickling/releases/tag/v0.1.7 (Release Notes)

Frequently asked questions

What is CVE-2026-22612?: CVE-2026-22612 is a high-severity vulnerability in Trailofbits Fickling, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2026-01-10.
How severe is CVE-2026-22612?: High severity. CVSS v3 base score is 7.8 out of 10.