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Vulnerability record · CVE-2026-53874 · published 17 June 2026

CVE-2026-53874: Deserialization of untrusted data vulnerability

picklescan before 1.0.1 contains an unsafe deserialization vulnerability allowing unauthenticated users to execute arbitrary code by hiding eval calls nested under callable objects via getattr. Attackers can embed malicious code in pickle files that evades detection but executes when the pickle is loaded from untrusted sources.

9.3 CVSS 4.0 Critical EPSS 0.76% · top 46.6% CWE-502 · Deserialization of untrusted data Deferred
9.3CVSS 4.0 base score
0.76%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 1.0.1 contains an unsafe deserialization vulnerability allowing unauthenticated users to execute arbitrary code by hiding eval calls nested under callable objects via getattr. Attackers can embed malicious code in pickle files that evades detection but executes when the pickle is loaded from untrusted sources.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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-9m3x-qqw2-h32h
https://www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-obfuscated-eval-call
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-9m3x-qqw2-h32h

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Source: NIST National Vulnerability Database (record CVE-2026-53874), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.