CVE-2026-56304

Medium

Description

picklescan before 1.0.1 contains an unsafe pickle deserialization vulnerability allowing unauthenticated attackers to create arbitrary zero-byte files via logging.FileHandler class instantiation. Attackers can exploit this by crafting malicious pickle payloads to bypass RCE blocklists and create lock files or other filesystem artifacts, potentially causing denial of service or application disruption.

SeverityMedium

CVSS6.5

Exploit probability—

ProductMmaitre314 Picklescan

PublishedJun 20, 2026

First seenJun 20, 2026

Weakness typeCWE-502Deserialization of untrusted data

How to fix

Update

mmaitre314 picklescan1.0.1 or later
picklescan1.0.1 or later

Vendor advisories

github.com/mmaitre314/picklescan/security/advisories/GHSA-m7j5-r2p5-c39r

Affected products

Product	Affected versions	Fixed in
mmaitre314 picklescan	v < 1.0.1	1.0.1
picklescanPyPI	v < 1.0.1	1.0.1

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