The wp-invoice plugin before 4.1.1 for WordPress has incorrect access control over wpi_interkassa payer metadata updates.
Conclusion & alert: CVE-2016-11009 is rated High Exploit Risk (64/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.77%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.54% 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 |
|---|---|---|---|---|
| — | 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 | 0.23% | 1.77% | +1.54% |
| 2 | 2025-03-30 | 2.57% | 0.23% | -2.34% |
| 3 | 2025-03-29 | — | 2.57% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.3 | 3.1 | MEDIUM |
|
3.9 | 1.4 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| usabilitydynamics | wp-invoice | < 4.1.1 | cpe:2.3:a:usabilitydynamics:wp-invoice:*:*:*:*:*:wordpress:*:* |
| URL | Tags |
|---|---|
| http://www.pritect.net/blog/wp-invoice-4-1-1-security-vulnerabilities | Exploit Third Party Advisory |
| https://wordpress.org/plugins/wp-invoice/#developers | Release Notes Third Party Advisory |
| https://wpvulndb.com/vulnerabilities/8378 | Third Party Advisory |