CVE-2026-8245 PUBLISHED

Concrete CMS 9.5.0 and below is vulnerable to Reflected XSS in Legacy Pagination via HTML attribute injection

Assigner: ConcreteCMS
Reserved: 09.05.2026 Published: 21.05.2026 Updated: 22.05.2026

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. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 6.0 with 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. Thanks Yonatan Drori (Tenzai) for reporting

Metrics

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
CVSS Score: 6

Product Status

Vendor Concrete CMS
Product Concrete CMS
Versions Default: unaffected
  • affected from 5.0 to 9.5.0 (incl.)

Credits

  • Yonatan Drori (Tenzai) finder

References

Problem Types

  • CWE-83 Improper neutralization of script in attributes in a web page CWE

Impacts

  • CAPEC-243 XSS Targeting HTML Attributes