GitHub Advisoryadvisory · Packagist

GHSA-f73j-pm2c-rxvr Concrete CMS is Vulnerable to Reflected XSS in Legacy Pagination

MEDIUM Published 2026-05-22 Modified 2026-06-24 Official page ↗
Aliases
CVE-2026-8245
Ecosystem
Packagist
Packages
concrete5/concrete5
Severity
Moderate
CVSS vector
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
Weaknesses
CWE-83
Reviewed
2026-06-24

Affected packages

• Packagist concrete5/concrete5: < 9.5.1 → fixed in 9.5.1

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="" (). Any authenticated admin or report viewer with access to `/dashboard/reports/forms/legacy` who clicks the crafted URL fires the payload in their session.

Related

Alias · CVE (1)

  • CVE-2026-8245 Concrete CMS 9.5.0 and below is vulnerable to Reflected XSS in Legacy Pagination via HTML attribute injection. vulnerability

Weakness · CWE (1)

  • CWE-83 Improper Neutralization of Script in Attributes in a Web Page weakness

References