Auth bypass in Contest-gallery Contest Gallery – Upload & Vote Photos, Media, Sell With Paypal Stripe
CVE-2026-4021
The Contest Gallery plugin for WordPress is vulnerable to an authentication bypass leading to admin account takeover in all versions up to, and including, 28.1.5. This is due to the email confirmation handler in `users-registry-check-after…
Vulnerability class: Broken Authentication
EPSS: 0.003 (52.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/f1b9725b-dee5-44ca-bb33-c6812…
- plugins.trac.wordpress.org/browser/contest-gallery/trunk/v10/v10-admin/users/fr…
- plugins.trac.wordpress.org/browser/contest-gallery/tags/28.1.4/v10/v10-admin/us…
- plugins.trac.wordpress.org/browser/contest-gallery/trunk/ajax/ajax-functions-fr…
- plugins.trac.wordpress.org/browser/contest-gallery/tags/28.1.4/ajax/ajax-functi…
- plugins.trac.wordpress.org/changeset
Frequently asked questions
- What is CVE-2026-4021?
- CVE-2026-4021 is a high-severity vulnerability in Contest-gallery Contest Gallery – Upload & Vote Photos, Media, Sell With Paypal Stripe, classified under Improper Authentication. CVSS score: 8.1/10. Published 2026-03-23.
- How severe is CVE-2026-4021?
- High severity. CVSS v3 base score is 8.1 out of 10.