CVE-2025-71344CWE-502insecure-deserialization

CVE-2025-71344

High · published June 23, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
39.5
In the wild
Unconfirmed
What it is

picklescan before 0.0.30 (affected versions 0.0.26 and earlier) fails to detect the ensurepip._run_pip built-in function when scanning pickle files, allowing attackers to execute arbitrary code. Malicious pickle files embedding ensurepip._run_pip calls in __reduce__ methods bypass picklescan detection and achieve remote code execution upon pickle.load() invocation.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00467 · 39.5th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-06-23T02:16Z
References (3)
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-xp4f-hrf8-rxw7 · [email protected]https://www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-undetected-ensurepip-run-pip-function · [email protected]https://github.com/mmaitre314/picklescan/security/advisories/GHSA-xp4f-hrf8-rxw7 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 22 JUN 21:04Z
    picklescan - Arbitrary Code Execution via Undetected ensurepip._run_pip Function
    cvelistv5