CVE-2026-6203: User Registration & Membership <= 5.1.4 - Unauthenticated Open Redirect via 'redirect_to_on_logout' Parameter
wpeverest · User Registration & Membership – Free & Paid Memberships, Subscriptions, Conten…
Affected: wpeverest User Registration & Membership – Free & Paid Memberships, Subscriptions, Conten… · Exploitation: check available, not yet exploited
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 52% of scored CVEs
DescriptionCVE.org
The User Registration & Membership plugin for WordPress is vulnerable to Open Redirect in versions up to and including 5.1.4. This is due to insufficient validation of user-supplied URLs passed via the 'redirect_to_on_logout' GET parameter before redirecting users. The `redirect_to_on_logout` GET parameter is passed directly to WordPress's `wp_redirect()` function instead of the domain-restricted `wp_safe_redirect()`. While `esc_url_raw()` is applied to sanitize malformed URLs, it does not restrict the redirect destination to the local domain, allowing an attacker to craft a specially formed link that redirects users to potentially malicious external URLs after logout, which could be used to facilitate phishing attacks.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- wpeverest · User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User…up to and including 5.1.4
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Check available, not yet exploited. A public nuclei template can confirm it on a system you are authorised to test.
- CISA KEV
- Not listed
- Public check
- User Registration & Membership WordPress plugin - Open Redirect · nuclei template in projectdiscovery/nuclei-templates
- Weakness
- Open Redirect
- Vendor
- wpeverest
- Published
- April 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-6203 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-601cwe.mitre.org
- wordfence.com/threat-intel/vulnerabilities/id/020bed37-9544-49b7wordfence.com
- plugins.trac.wordpress.org/browser/user-registration/trunk/incluplugins.trac.wordpress.org
- plugins.trac.wordpress.org/browser/user-registration/tags/5.1.4/plugins.trac.wordpress.org