CVE-2025-12849: Contest-Gallery Contest Gallery – Upload & Vote Photos, Media, Sell With PayPal & Stripe

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Contest-Gallery Contest Gallery – Upload & Vote Photos, Media, Sell With PayPal & Stripe: up to and including 28.0.2

Published 2025-11-15. Last modified 2026-10-07.