CVE-2026-16056: CWE-862 Missing Authorization in Contest Gallery
The Contest Gallery WordPress plugin before 30.0.7 does not perform any capability or nonce check in one of its handlers, allowing any authenticated user down to Subscriber to read the site's entire stored OpenAI prompt history.
AI Analysis
Technical Summary
CVE-2026-16056 is a missing authorization vulnerability (CWE-862) in the Contest Gallery WordPress plugin prior to version 30.0.7. The plugin fails to verify user capabilities or nonce tokens in a specific handler, enabling any authenticated user, even with minimal privileges such as Subscriber, to access the full OpenAI prompt history stored by the site. This exposure of sensitive data arises from the lack of proper access control enforcement.
Potential Impact
Any authenticated user on the affected WordPress site can read the entire stored OpenAI prompt history, potentially exposing sensitive or confidential information contained in those prompts. This could lead to information disclosure risks depending on the nature of the stored prompts.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, site administrators should consider restricting authenticated user roles or disabling the plugin if the exposure risk is unacceptable.
CVE-2026-16056: CWE-862 Missing Authorization in Contest Gallery
Description
The Contest Gallery WordPress plugin before 30.0.7 does not perform any capability or nonce check in one of its handlers, allowing any authenticated user down to Subscriber to read the site's entire stored OpenAI prompt history.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16056 is a missing authorization vulnerability (CWE-862) in the Contest Gallery WordPress plugin prior to version 30.0.7. The plugin fails to verify user capabilities or nonce tokens in a specific handler, enabling any authenticated user, even with minimal privileges such as Subscriber, to access the full OpenAI prompt history stored by the site. This exposure of sensitive data arises from the lack of proper access control enforcement.
Potential Impact
Any authenticated user on the affected WordPress site can read the entire stored OpenAI prompt history, potentially exposing sensitive or confidential information contained in those prompts. This could lead to information disclosure risks depending on the nature of the stored prompts.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, site administrators should consider restricting authenticated user roles or disabling the plugin if the exposure risk is unacceptable.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-07-17T12:05:46.132Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7187d0bf32cb7a34e19ad3
Added to database: 08/04/2026, 06:33:52 UTC
Last enriched: 08/04/2026, 06:54:14 UTC
Last updated: 08/04/2026, 12:56:01 UTC
Views: 9
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.