# CVE-2026-8245

## Summary

- **CVE ID:** CVE-2026-8245
- **Severity:** MEDIUM
- **CVSS Score:** 6 (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)
- **CWE:** CWE-83
- **Published:** May 21, 2026
- **Last Modified:** May 22, 2026

## 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. 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

## Affected Products

- Concrete CMS — Concrete CMS (5.0)

## References

- [CNA](https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.14%
- **EPSS Percentile:** 3.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._