Unauthenticated Signature Verification Flaw in Document Gallery Plugin by WordPress
CVE-2026-74922

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Document Gallery
Vendor
CVE Published:
19 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-74922?

The Document Gallery plugin for WordPress has a significant security flaw that affects versions up to 5.1.1. It fails to authenticate the signature on one of its webhook endpoints when no shared secret is configured, which is the default setting. This vulnerability allows unauthorized users to alter the thumbnail images associated with any document, potentially misleading users and compromising the integrity of the site's content.

Affected Version(s)

Document Gallery 4.1 <= 5.1.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-74922 - Proof of Concept

References

https://wpscan.com/vulnerability/850aaa4e-82ff-479f-bdcd-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Artus KG
WPScan
.