Vulnerability · Published Jan 10, 2026 · Assigned by GitHub_M
CVE-2026-22608Fickling vulnerable to use of ctypes and pydoc gadget chain to bypass detection
High 8.9
In plain English
A high-severity unsafe deserialization in fickling from trailofbits. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | fickling | 0.1.7 | GHSA-5hvc-6wx8-mvv4 |
| PyPI | fickling | 0.1.7 | PYSEC-2026-1369 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| trailofbits | fickling | < 0.1.7 |
Weakness: CWE-184, CWE-502 · 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