CVE-2025-71321
picklescan - Arbitrary File Writing via distutils Module Bypass
- State
- Published
- Severity
- 9.3 Critical
- Published
- Jun 17, 2026
- Updated
- Jun 17, 2026
- Reserved
- Jun 8, 2026
Description
picklescan before 0.0.33 contains an arbitrary file writing vulnerability that allows attackers to bypass the dangerous blocklist by using distutils.file_util.write_file. Attackers can construct malicious pickle objects to overwrite critical system files and achieve denial of service or remote code execution.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | 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 | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-502 Deserialization of Untrusted Data
Affected Products
| Product | Versions |
|---|---|
picklescanpicklescan |
|
References
- GHSA Advisory GHSA-m273-6v24-x4m4vendor-advisory
- VulnCheck Advisory: picklescan - Arbitrary File Writing via distutils Module Bypassthird-party-advisory
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