CVE-2025-71376

HIGH 8.1

picklescan - Arbitrary Code Execution via Undetected idlelib.autocomplete.AutoComplete.fetch_completions

CVSS Score

8.1

EPSS Score

0.0%

EPSS Percentile

0th

picklescan before 0.0.29 fails to detect malicious pickle files using idlelib.autocomplete.AutoComplete.fetch_completions in reduce methods. Attackers can embed undetected code in pickle files that executes arbitrary commands when loaded by victims.

CWE	CWE-502
Vendor	picklescan
Product	picklescan
Published	Jun 23, 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

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/mmaitre314/picklescan/security/advisories/GHSA-7cq8-mj8x-j263 vulncheck.com: https://www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-undetected-idlelib-autocomplete-autocomplete-fetch-completions

Credits

🔍 FredericDT