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OpenAdvisories
Medium · 5.3 CVE-2026-74922 EUVD-2026-104099GHSA-wpx6-cwp7-w9hm

Document Gallery 4.1 - 5.1.1 - Unauthenticated Document Thumbnail Replacement via Thumber Webhook Signature Bypass

Published Oct 19, 2026 · Updated Oct 19, 2026 · Assigned by WPScan

Description

The Document Gallery WordPress plugin through 5.1.1 does not verify the signature on one of its unauthenticated webhook endpoints when no shared secret has been configured, which is the default state, allowing unauthenticated users to replace the thumbnail image the site publishes for any document.

Affected products

VendorProductAffectedFixed
— Document Gallery 4.1 – ≤ 5.1.1 —

References