CVE-2026-16586
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk26th percentile - higher than 26% of all known CVEs
Summary
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.
Risk Assessment
An attacker with author privileges can access database data, including user data and passwords.
Recommendation
Update the Contest Gallery plugin to the latest patched version. Restrict author-level access to trusted users only.
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-2026-16055High
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-2026-16057Medium
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.
- 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.
- CVE-2025-12849Medium
The Contest Gallery plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 28.0.2. This is due to the plugin registering the `cg_check_wp_admin_upload_v10` AJAX action for both authenticated and unauthenticated users without implementing capability checks or nonce verification. This makes it possible for unauthenticated attackers to inject arbitrary WordPress media attachments into galleries and manipulate gallery metadata via the `cg_check_wp_admin_upload_v10` action. It does not enable an attacker to move or upload files.
- CVE-2025-62950Medium
The Contest Gallery plugin by ContestGallery developer contains a Cross-Site Request Forgery vulnerability in versions from n/a through 28.0.0. This vulnerability allows an attacker to leverage CSRF to perform unauthorized actions in the context of a logged-in administrator.
Original NVD description (English source)
The Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe plugin for WordPress is vulnerable to Second-Order SQL Injection via MultipleFiles Second-Order Payload via 'cg_multiple_files_for_post' -> 'cgRealId' in all versions up to, and including, 30.0.7 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with author-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS