CVE-2026-16057
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk14th percentile - higher than 14% of all known CVEs
Summary
The Contest Gallery WordPress plugin before version 30.0.7 fails to perform capability or nonce checks in one of its post-deletion handlers, relying only on a coarse role-membership test. This allows any Author-level or higher user to permanently delete arbitrary posts, pages, and other content they do not own.
Risk Assessment
The organization risks losing important content, including pages and posts published by other users, which can disrupt site operations and cause data loss.
Recommendation
Update the Contest Gallery plugin to version 30.0.7 or later, which includes a fix for this vulnerability.
Other vulnerabilities in Contest Gallery
See all- CVE-2026-40771Critical
There is an unauthenticated SQL Injection vulnerability in Contest Gallery versions up to 28.1.6.
- CVE-2026-61986High
Unauthenticated Cross Site Scripting (XSS) vulnerability in Contest Gallery plugin versions up to 30.0.5. An attacker can inject malicious script without authentication.
- CVE-2026-16586Medium
The Contest Gallery plugin for WordPress up to version 30.0.7 is vulnerable to second-order SQL injection via the cg_multiple_files_for_post and cgRealId parameters. Insufficient escaping and lack of query preparation allow authenticated attackers with author-level access to append additional SQL queries, potentially extracting sensitive information.
- CVE-2026-16055High
The Contest Gallery WordPress plugin before 30.0.7 does not route its front-end login through the standard WordPress authentication flow, issuing an authentication cookie directly after the password check, which bypasses installed brute-force-protection and two-factor-authentication. This enables unlimited, unthrottled password guessing against any account (including administrators) up to full account takeover.
- CVE-2026-65447High
A Cross Site Scripting (XSS) vulnerability in the Contest Gallery plugin for WordPress versions up to 30.0.6. An unauthenticated attacker can inject a malicious script.
- CVE-2026-42660Medium
Contest Gallery versions up to 28.1.7 have a vulnerability that allows for the exposure of subscriber sensitive data.
- CVE-2026-42657Medium
Contest Gallery versions up to 28.1.7 contain an unauthenticated vulnerability that may be exploited by attackers.
- CVE-2026-42656Medium
There is a Cross Site Scripting (XSS) vulnerability affecting subscribers in Contest Gallery versions up to 28.1.6.
Original NVD description (English source)
The Contest Gallery WordPress plugin before 30.0.7 does not perform per-object capability or nonce checks in one of its post-deletion handlers, gating it only by a coarse role-membership test, which allows any Author-level or higher user to permanently delete arbitrary posts, pages, and other content they do not own.