What is CVE-2025-71359?

CVE-2025-71359 is a high-severity vulnerability in Picklescan, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2026-07-04.

How severe is CVE-2025-71359?

High severity. CVSS v3 base score is 8.1 out of 10.

Deserialization in Picklescan

CVE-2025-71359

picklescan before 0.0.29 fails to detect malicious pickle payloads that utilize lib2to3.pgen2.grammar.Grammar.loads in the reduce method, allowing remote code execution. Attackers can craft pickle files embedding dangerous code that evades…

Vulnerability class: Insecure Deserialization

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

Affected products

Picklescan — versions 0, 0.0.29

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2025-71359?: CVE-2025-71359 is a high-severity vulnerability in Picklescan, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2026-07-04.
How severe is CVE-2025-71359?: High severity. CVSS v3 base score is 8.1 out of 10.