CVSS 4.0
8.9 highCVSS: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:PCVE-2026-22608
High (8.9) in trailofbits fickling. EPSS 0.4% chance of exploitation in the next 30 days. Fixed in fickling 0.1.7.
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.
Severity
CVSS 3.1
7.8 highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 33% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-184, CWE-502
- Published
- Modified
- Record from
- the NVD, synced
Affected
- trailofbits:fickling
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-5hvc-6wx8-mvv4 | PyPI | fickling | <0.1.7 | 0.1.7 |
| PYSEC-2026-1369 | PyPI | fickling | <0.1.7 | 0.1.7 |
References
- https://github.com/trailofbits/fickling/commit/b793563e60a5e039c5837b09d7f4f6b92e6040d1
- https://github.com/trailofbits/fickling/releases/tag/v0.1.7
- https://github.com/trailofbits/fickling/security/advisories/GHSA-5hvc-6wx8-mvv4
- https://github.com/trailofbits/fickling/security/advisories/GHSA-5hvc-6wx8-mvv4