CVE-2026-2487 json
Admin Custom Login <= 3.6.4 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Message Above Login Form' Setting
published 2mo ago modified 2mo ago also EUVD-2026-59847
- cvss
- 4.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 25%
- public exploits
- 0
- none known
Summary
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.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2mo ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.4 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N |
Affected products
- weblizar Admin Custom Login
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/0e81b6c1-5af5-4ad4-92db-9dba76399857?source=cve
- plugins.trac.wordpress.org /browser/admin-custom-login/trunk/login-form-screen.php#L162
- plugins.trac.wordpress.org /browser/admin-custom-login/tags/3.6.3/login-form-screen.php#L162
- plugins.trac.wordpress.org /browser/admin-custom-login/trunk/includes/login-form-setting/login-form-background.php#L759
- 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 /changeset?reponame=&old=3510948%40admin-custom-login&new=3510948%40admin-custom-login
Sources
- CVE List CVE-2026-2487
- NVD CVE-2026-2487
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.