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Vulnerability record · CVE-2025-71358 · published 22 June 2026

CVE-2025-71358: Deserialization of untrusted data vulnerability

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

7.6 CVSS 4.0 High EPSS 0.43% · top 65.1% CWE-502 · Deserialization of untrusted data Deferred
7.6CVSS 4.0 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
23 Jun 2026Last modified by NVD

Description

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

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-6w4w-5w54-rjvr
https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-idlelib-autocomplete-autocomplete-get-entity
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-6w4w-5w54-rjvr

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Source: NIST National Vulnerability Database (record CVE-2025-71358), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.