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.
CVE-2026-2487
MEDIUMPre-NVD 4.44.4—Trending — 4 sources updated this week
EchelonGraph scoreHIGH confidence
Score 4.4 from GitHub Security Advisory published 2026-08-16. a secondary CVSS source baseline 4.4; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
4.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.4Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.4
- EG Score
- 4.4(high)
- EG Risk
- 20(Track)EG Risk 20/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity44% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 11%
- KEV
- Not listed
Published
August 16, 2026
Last Modified
August 20, 2026
References (6)
- security@wordfencehttps://plugins.trac.wordpress.org/browser/admin-custom-login/tags/3.6.3/includes/login-form-setting/login-form-background.php#L759
- security@wordfencehttps://plugins.trac.wordpress.org/browser/admin-custom-login/tags/3.6.3/login-form-screen.php#L162
- security@wordfencehttps://plugins.trac.wordpress.org/browser/admin-custom-login/trunk/includes/login-form-setting/login-form-background.php#L759
- security@wordfencehttps://plugins.trac.wordpress.org/browser/admin-custom-login/trunk/login-form-screen.php#L162
- security@wordfencehttps://plugins.trac.wordpress.org/changeset?reponame=&old=3510948%40admin-custom-login&new=3510948%40admin-custom-login
- security@wordfencehttps://www.wordfence.com/threat-intel/vulnerabilities/id/0e81b6c1-5af5-4ad4-92db-9dba76399857?source=cve
Vendor Advisories for CVE-2026-2487(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 20× in last 7d / 20× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-20 22:55 UTCEPSS rescore
- 2026-08-20 22:55 UTCEPSS rescore
- 2026-08-20 13:01 UTCGHSA enrichment
- 2026-08-19 18:21 UTCEG score recompute
- 2026-08-19 18:21 UTCGHSA enrichment
- 2026-08-19 17:03 UTCEPSS rescore
- 2026-08-18 17:49 UTCEG score recompute
- 2026-08-18 17:49 UTCGHSA enrichment
- 2026-08-18 13:48 UTCEPSS rescore
- 2026-08-17 18:33 UTCEG score recompute
- 2026-08-17 18:33 UTCGHSA enrichment
- 2026-08-17 17:30 UTCEG score recompute
- 2026-08-17 17:30 UTCGHSA enrichment
- 2026-08-17 13:47 UTCEPSS rescore
- 2026-08-17 03:37 UTCEG score recompute
- 2026-08-17 03:37 UTCGHSA enrichment
- 2026-08-16 14:56 UTCEPSS rescore
- 2026-08-16 04:28 UTCEG score recompute
- 2026-08-16 03:36 UTCEG score recompute
- 2026-08-16 03:36 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-2487?
CVE-2026-2487 is a medium vulnerability published on August 16, 2026. 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…
When was CVE-2026-2487 disclosed?
CVE-2026-2487 was first published in the National Vulnerability Database on August 16, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-2487 actively exploited?
CVE-2026-2487 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 89.4% of all scored CVEs.
What is the CVSS score of CVE-2026-2487?
CVE-2026-2487 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2026-2487?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-2487, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-2487
Is Your Infrastructure Affected by CVE-2026-2487?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.