CVE-2026-22608 json
Fickling vulnerable to use of ctypes and pydoc gadget chain to bypass detection
published 2026-01-09 9 mo ago modified 2026-07-07 4 mo ago also EUVD-2026-1686 , GHSA-5hvc-6wx8-mvv4 , PYSEC-2026-1369
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi fickling 0.1.7
- trailofbits fickling 0.1.7
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 9 mo ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/trailofbits/fickling/security/advisories/GHSA-5hvc-6wx8-mvv4 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.9 | 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 |
| CNA | 4.0 | 8.9 | 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:X/V:X/RE:X/U:X |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | fickling | <0.1.7 |
0.1.7 |
Affected products
- trailofbits fickling
Classification
References
-
github.com
/trailofbits/fickling/commit/b793563e60a5e039c5837b09d7f4f6b92e6040d1
web, patch
-
github.com
/trailofbits/fickling/pull/195
web
-
github.com
/trailofbits/fickling/commit/d0b00d584afb5c58e38991cd544cb3889de90db6
web
-
github.com
/trailofbits/fickling/security/advisories/GHSA-5hvc-6wx8-mvv4
exploit, web, vendor-advisory
-
github.com
/trailofbits/fickling/releases/tag/v0.1.7
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-22608
advisory
-
github.com
/trailofbits/fickling
package
-
github.com
/trailofbits/fickling/blob/977b0769c13537cd96549c12bb537f05464cf09c/test/test_bypasses.py#L145
web
-
pypi.org
/project/fickling
package
-
github.com
/advisories/GHSA-5hvc-6wx8-mvv4
advisory
Sources
- CVE List CVE-2026-22608
- GitHub Advisory GHSA-5hvc-6wx8-mvv4
- NVD CVE-2026-22608
- OSV PYSEC-2026-1369
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.