Auth bypass in Stellarwp Membership Plugin – Restrict Content
CVE-2026-1321
The Membership Plugin – Restrict Content plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.2.20. This is due to the `rcp_setup_registration_init()` function accepting any membership level ID…
Vulnerability class: Broken Access Control
EPSS: 0.001 (33.7th 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
- Stellarwp Membership Plugin – Restrict Content — versions 0
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/abfaa4a6-92b0-4233-b08d-e6680…
- plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.15/core/includes/r…
- plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.15/core/includes/r…
- plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.15/core/includes/c…
- plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.15/core/includes/m…
- plugins.trac.wordpress.org/changeset/3447187/
- plugins.trac.wordpress.org/changeset/3460177/
Frequently asked questions
- What is CVE-2026-1321?
- CVE-2026-1321 is a high-severity vulnerability in Stellarwp Membership Plugin – Restrict Content, classified under Missing Authorization. CVSS score: 8.1/10. Published 2026-03-05.
- How severe is CVE-2026-1321?
- High severity. CVSS v3 base score is 8.1 out of 10.