The wp-slimstat (aka Slimstat Analytics) plugin before 4.1.6.1 for WordPress has XSS via an HTTP Referer header, or via a field associated with JavaScript-based Referer tracking.
Conclusion & alert: CVE-2015-9273 is rated Low Risk (37.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.27%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2025-03-30 | 4.02% | 0.27% | -3.76% |
| 2 | 2025-03-29 | 0.27% | 4.02% | +3.76% |
| 3 | 2025-03-24 | — | 0.27% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.1 | 3.0 | MEDIUM |
|
2.8 | 2.7 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| wp-slimstat | slimstat_analytics | < 4.1.6.1 | cpe:2.3:a:wp-slimstat:slimstat_analytics:*:*:*:*:*:wordpress:*:* |
| URL | Tags |
|---|---|
| http://plugins.svn.wordpress.org//wp-slimstat/tags/4.1.6.1/readme.txt | Release Notes Third Party Advisory |
| https://plugins.trac.wordpress.org/changeset/1204104 | Release Notes Third Party Advisory |
| https://www.openwall.com/lists/oss-security/2015/07/30/1 | Mailing List Third Party Advisory |