CVE-2025-71321
picklescan - Arbitrary File Writing via distutils Module Bypass
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.
Fixes and workarounds
Fix
picklescan (PyPI): OSV reports a fixed version 0.0.33. Check the advisory for supported release branches.
Source: OSV GHSA-m273-6v24-x4m4Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| picklescan picklescan picklescan
pypi |
≥ 0; < 0.0.33 (affected, semver) 0.0.33 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
picklescanpicklescan
PyPI |
0.0.1 (affected, PyPI) 0.0.10 (affected, PyPI) 0.0.11 (affected, PyPI) 0.0.12 (affected, PyPI) 0.0.13 (affected, PyPI) 0.0.14 (affected, PyPI) 0.0.15 (affected, PyPI) 0.0.16 (affected, PyPI) 0.0.17 (affected, PyPI) 0.0.18 (affected, PyPI) 0.0.19 (affected, PyPI) 0.0.2 (affected, PyPI) 0.0.20 (affected, PyPI) 0.0.21 (affected, PyPI) 0.0.22 (affected, PyPI) 0.0.23 (affected, PyPI) 0.0.24 (affected, PyPI) 0.0.25 (affected, PyPI) 0.0.26 (affected, PyPI) 0.0.27 (affected, PyPI) 0.0.28 (affected, PyPI) 0.0.29 (affected, PyPI) 0.0.3 (affected, PyPI) 0.0.30 (affected, PyPI) 0.0.31 (affected, PyPI) 0.0.32 (affected, PyPI) 0.0.4 (affected, PyPI) 0.0.5 (affected, PyPI) 0.0.6 (affected, PyPI) 0.0.7 (affected, PyPI) 0.0.8 (affected, PyPI) 0.0.9 (affected, PyPI) Ecosystem version events: introduced 0; fixed 0.0.33 Source events (ECOSYSTEM)Other versions: unaffected |
OSV GHSA-m273-6v24-x4m4 |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 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 | CNA: 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 | CNA: VulnCheck |
Exploit evidence
- https://github.com/mmaitre314/picklescan/security/advisories/GHSA-m273-6v24-x4m4
exploit · ADP: CISA-ADP
References
- https://github.com/mmaitre314/picklescan/security/advisories/GHSA-m273-6v24-x4m4CNA: VulnCheck · vendor-advisory
- https://www.vulncheck.com/advisories/picklescan-arbitrary-file-writing-via-distutils-module-bypassCNA: VulnCheck · third-party-advisory
- https://github.com/mmaitre314/picklescan/security/advisories/GHSA-m273-6v24-x4m4ADP: CISA-ADP · exploit
- https://github.com/advisories/GHSA-m273-6v24-x4m4OSV / GitHub Security Advisories · advisory
- https://osv.dev/vulnerability/GHSA-m273-6v24-x4m4OSV / GitHub Security Advisories · osv
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