CVE-2026-53872

High

Description

picklescan before 0.0.35 contains an unsafe pickle deserialization vulnerability allowing unauthenticated attackers to read arbitrary server files by chaining io.FileIO and urllib.request.urlopen. Attackers can bypass RCE-focused blocklists to exfiltrate sensitive data like /etc/passwd to external servers.

SeverityHigh

CVSS7.5

Exploit probability—

ProductPicklescan

PublishedJun 17, 2026

First seenJun 17, 2026

Weakness typeCWE-22Path traversal

How to fix

Update

picklescan0.0.35 or later

Vendor advisories

github.com/mmaitre314/picklescan/security/advisories/GHSA-9726-w42j-3qjr

Affected products

Product	Affected versions	Fixed in
picklescanPyPI	v < 0.0.35	0.0.35

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