Unauthorized Access Vulnerability in Contest Gallery WordPress Plugin
CVE-2026-16056

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Contest Gallery
Vendor
CVE Published:
4 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-16056?

The Contest Gallery plugin for WordPress prior to version 30.0.7 lacks necessary capability and nonce validation in one of its handlers. This oversight permits any authenticated user, including those with minimal permissions such as Subscribers, to access the entire stored OpenAI prompt history of the site, potentially exposing sensitive information without proper authentication restrictions.

Affected Version(s)

Contest Gallery 0 < 30.0.7

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-2026-16056 - Proof of Concept

References

https://wpscan.com/vulnerability/53aec8d3-da17-4183-91b3-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Meher Sudhakar Abbireddi
WPScan
.