CVE-2025-71359
picklescan - Unsafe Deserialization via lib2to3.pgen2.grammar.Grammar.loads
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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 picklescan detection and executes during pickle.load() deserialization.
| CWE | CWE-502 |
| Vendor | picklescan |
| Product | picklescan |
| Published | Jul 4, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
picklescan / picklescan
0 < 0.0.29
References
Credits
🔍 FredericDT