picklescan - Security scanning bypass via non-standard file extensions
Priority LOW 30CWE-646Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.
Summary
picklescan before 0.0.22 only considers standard pickle file extensions in the scope for its vulnerability scan. An attacker could craft a malicious model that uses Pickle and include a malicious pickle file with a non-standard file extension. Because the malicious pickle file inclusion is not considered as part of the scope of picklescan, the file would pass security checks and appear to be safe, when it could instead prove to be problematic.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00395 33rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed picklescan (PyPI): 0.0.22
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| picklescan | picklescan | 0.0.1 – 0.0.21 | — | No fix listed | CNA |
| — | picklescan (PyPI) | before 0.0.22 | 0.0.22 | Patch available | GHSA-769v-p64c-89pr |
- picklescan Vendorpicklescan Affected 0.0.1 – 0.0.21 Fixed in — No fix listed CNA
- picklescan (PyPI) Vendor— Affected before 0.0.22 Fixed in 0.0.22 Patch available GHSA-769v-p64c-89pr
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mmaitre314:picklescan:*:*:*:*:*:*:*:* | before 0.0.22 | Vulnerable | picklescan |
- cpe:2.3:a:mmaitre314:picklescan:*:*:*:*:*:*:*:* Versions before 0.0.22 Vulnerable ·picklescan
Remediation
- Fix · GHSA-769v-p64c-89pr picklescan (PyPI) Fixed in 0.0.22 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-1889
- 2026-10-03 Alias added: GHSA-769v-p64c-89pr
References
Advisory 2
More Picklescan vulnerabilities
- TI-2025-09324 PickleScan Bypasses Unsafe Globals Check Using Submodule Imports CVSS 4.0CRITICAL 9.3
- TI-2025-09323 PickleScan Security Bypass via Bad CRC in ZIP Archive CVSS 4.0CRITICAL 9.3
- TI-2025-09322 PickleScan Security Bypass Using Misleading File Extension CVSS 4.0CRITICAL 9.3
- TI-2026-40669 picklescan - Arbitrary File Creation via logging.FileHandler Deserialization CVSS 4.0MEDIUM 6.9
- TI-2025-43498 picklescan - Remote Code Execution via Undetected cProfile.runctx in Pickle Files CVSS 4.0HIGH 7.6
- TI-2025-43477 picklescan - Arbitrary Code Execution via Undetected idlelib.pyshell.ModifiedInterpreter.runcommand CVSS 4.0HIGH 7.6
Sources
- CVE-2025-1889 · CVE Program
- CVE-2025-1889 · NVD
- FIRST EPSS
- GHSA-769v-p64c-89pr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences