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CVE-2025-71321
Published:June 17, 2026
Updated:June 29, 2026
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.
Affected Packages
https://github.com/mmaitre314/picklescan.git (GITHUB):
Affected version(s) >=v0.0.2 <v0.0.33
Fix Suggestion:
Update to version v0.0.33
picklescan (PYTHON):
Affected version(s) >=0.0.1 <0.0.33
Fix Suggestion:
Update to version 0.0.33
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CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
POC
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Files or Directories Accessible to External Parties
Deserialization of Untrusted Data
EPSS
Base Score:
0.62