Arbitrary Code Execution Vulnerability in Picklescan by Mmaitre314
CVE-2025-71376

7.6HIGH

Key Information:

Vendor

Picklescan

Status
Picklescan
Vendor
CVE Published:
23 June 2026

What is CVE-2025-71376?

Picklescan versions prior to 0.0.29 possess a flaw that allows attackers to exploit undetected malicious pickle files. The vulnerability specifically arises from the idlelib.autocomplete.AutoComplete.fetch_completions method used in reduce functions. This security oversight enables attackers to embed harmful code in pickle files, which, upon being loaded by unsuspecting users, executes arbitrary commands, posing significant risks to system integrity and data security.

Affected Version(s)

picklescan 0 < 0.0.29

picklescan 0.0.29

References

https://github.com/mmaitre314/picklescan/security/advisor...
vendor-advisory
https://www.vulncheck.com/advisories/picklescan-arbitrary...
third-party-advisory

CVSS V4

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

FredericDT
.