CVE-2026-8245
Concrete CMS is Vulnerable to Reflected XSS in Legacy Pagination
EPSS 0.14%
Description
Concrete CMS 9.5.0 and below is vulnerable to Reflected XSS in Legacy Pagination via HTML attribute injection. Concrete\Core\Legacy\Pagination builds pagination links by raw-interpolating its $URL field into href="" (<a href="{$linkURL}" …>). Any authenticated admin or report viewer with access to `/dashboard/reports/forms/legacy` who clicks the crafted URL fires the payload in their session.
How to fix CVE-2026-8245
To remediate CVE-2026-8245, upgrade the affected package to a fixed version below.
- Packagist/concrete5/concrete5—upgrade to 9.5.1 or later
Is CVE-2026-8245 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 9.5.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N |