Cross-site scripting (XSS) vulnerability in nextend-facebook-settings.php in the Nextend Facebook Connect plugin before 1.5.1 for WordPress allows remote attackers to inject arbitrary web script or HTML via the fb_login_button parameter in a newfb_update_options action.
Conclusion & alert: CVE-2014-8800 is rated High Exploit Risk (64.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.77%). Core evidence: 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.64% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 35439 | exploit_db | edb | 2014-12-02 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 2.13% | 3.77% | +1.64% |
| 2 | 2025-03-30 | 12.41% | 2.13% | -10.28% |
| 3 | 2025-03-29 | — | 12.41% | — |
Full EPSS history (9 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| nextendweb | nextend_facebook_connect | <= 1.5.0 | cpe:2.3:a:nextendweb:nextend_facebook_connect:*:*:*:*:*:wordpress:*:* |