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CVE-2025-12849

MEDIUM 5.3 CVSS 3.1
Published
November 15, 2025
Last modified
October 7, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-862
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Description

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 WordPress components

  • Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe Plugin · contest-gallery
    Confirmed match Active
    Up to and including 28.0.2
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • contest-gallery Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe — Up to and including 28.0.2

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/contest-gallery/tags/28.0.2/v10/include-functions-v10.php#L42
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/contest-gallery/tags/28.0.2/v10/include-functions-v10.php#L47
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/contest-gallery/tags/28.0.2/v10/include-functions-v10.php#L64
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/contest-gallery/tags/28.0.2/v10/v10-admin/gallery/wp-uploader.php#L15
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/contest-gallery/tags/28.0.2/v10/v10-admin/gallery/wp-uploader.php#L173
  • wordpress.org https://wordpress.org/plugins/contest-gallery/#developers
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/e000c4ad-43ec-4ad0-89f9-74e9e6d8b917?source=cve
  • nvd.nist.gov Official NVD record