CVE-2026-80072: Unknown User Registration & Membership

Medium severity, CVSS 4.7. EPSS: 0.3% chance of exploitation in the next 30 days.

The User Registration & Membership WordPress plugin before 5.2.8 does not validate the destination of a post-login redirect before redirecting, allowing unauthenticated attackers to redirect visitors to an arbitrary external URL, which can be abused for phishing.

Affected products

• Unknown User Registration & Membership: before 5.2.8 (fixed in 5.2.8)

Published 2026-09-13. Last modified 2026-09-14.