installer.php in the Snap Creek Duplicator (WordPress Site Migration & Backup) plugin before 1.2.30 for WordPress has XSS because the values "url_new" (/wp-content/plugins/duplicator/installer/build/view.step4.php) and "logging" (wp-content/plugins/duplicator/installer/build/view.step2.php) are not filtered correctly.
Conclusion & alert: CVE-2017-16815 is rated Moderate Risk (45.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.02%). Mandatory action: Review affected assets and schedule remediation.
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 | 2026-06-15 | 0.29% | 1.02% | +0.73% |
| 2 | 2026-03-04 | 0.38% | 0.29% | -0.10% |
| 3 | 2026-03-01 | — | 0.38% | — |
Full EPSS history (15 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 |
|---|---|---|---|
| snapcreek | duplicator | 1.2.28 | cpe:2.3:a:snapcreek:duplicator:1.2.28:*:*:*:*:wordpress:*:* |
| URL | Tags |
|---|---|
| https://packetstormsecurity.com/files/144914/WordPress-Duplicator-Migration-1.2.28-Cross-Site-Scripting.html | Third Party Advisory VDB Entry |
| https://snapcreek.com/duplicator/docs/changelog | Release Notes Vendor Advisory |