🔐 CVE Alert

CVE-2026-2487

MEDIUM 4.4

Admin Custom Login <= 3.6.4 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Message Above Login Form' Setting

CVSS Score
4.4
EPSS Score
0.0%
EPSS Percentile
0th

The Admin Custom Login plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 3.6.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

CWE CWE-79
Vendor weblizar
Product admin custom login
Published Aug 16, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

weblizar / Admin Custom Login
0 ≤ 3.6.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/0e81b6c1-5af5-4ad4-92db-9dba76399857?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/admin-custom-login/trunk/login-form-screen.php#L162 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/admin-custom-login/tags/3.6.3/login-form-screen.php#L162 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/admin-custom-login/trunk/includes/login-form-setting/login-form-background.php#L759 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/admin-custom-login/tags/3.6.3/includes/login-form-setting/login-form-background.php#L759 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?reponame=&old=3510948%40admin-custom-login&new=3510948%40admin-custom-login

Credits

Ryoma Nishioka