Vulnerability · Published Jun 17, 2026 · Assigned by VulnCheck

CVE-2026-53874picklescan - Arbitrary Code Execution via Obfuscated eval Call

Critical 9.8

In plain English

A critical-severity unsafe deserialization in picklescan from picklescan. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)0.5%top 55.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	picklescan	1.0.1	GHSA-9m3x-qqw2-h32h
PyPI	picklescan	1.0.1	PYSEC-2026-1789

Affected products (as reported)

Vendor	Product	Versions
picklescan	picklescan	0 – before 1.0.1

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

GHSA Advisory GHSA-9m3x-qqw2-h32h vendor-advisory
VulnCheck Advisory: picklescan - Arbitrary Code Execution via Obfuscated eval Call third-party-advisory