An issue was discovered in concrete5 <= 5.6.3.4. The vulnerability exists due to insufficient filtration of user-supplied data (disable_choose) passed to the "concrete5-legacy-master/web/concrete/tools/files/search_dialog.php" URL. An attacker could execute arbitrary HTML and script code in a browser in the context of the vulnerable website.
Conclusion & alert: CVE-2017-6905 is rated Moderate Risk (45.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.99%). 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 | 0.24% | 0.99% | +0.75% |
| 2 | 2025-12-28 | 0.27% | 0.24% | -0.03% |
| 3 | 2025-12-27 | — | 0.27% | — |
Full EPSS history (12 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] |
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/96891 | Third Party Advisory VDB Entry |
| https://github.com/Mnkras/concrete5/commit/3eab581ab670982676e9dabddc9ad439391174ee | Issue Tracking Patch |
| https://github.com/concrete5/concrete5-legacy/commit/2b16399ce3e962a8c27fb3ec14bc8e855d65b63a | Issue Tracking Patch |
| https://github.com/concrete5/concrete5-legacy/issues/1947 | Issue Tracking |