CVE-2026-74922

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

Published Oct 19, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions document Gallery
Vendors & Products Wordpress-extensions
Wordpress-extensions document Gallery
Type Values Removed Values Added
Weaknesses CWE-287
Type Values Removed Values Added
Weaknesses CWE-345
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-287
Type Values Removed Values Added
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.
Title Document Gallery 4.1 - 5.1.1 - Unauthenticated Document Thumbnail Replacement via Thumber Webhook Signature Bypass
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Oct 19, 2026, 9:31 AM
Reserved
Aug 17, 2026, 11:27 AM
Status
Deferred
Published
Oct 19, 2026, 7:16 AM
Modified
Oct 19, 2026, 9:02 PM