CVE-2026-3242
MEDIUM4.8EPSS 0.01%Concrete CMS has a stored Cross-site Scripting (XSS) vulnerability
Published: 3/4/2026Modified: 3/4/2026
Also known as:GHSA-w9qg-chfh-g3q9
Description
In Concrete CMS below version 9.4.8, a rogue administrator can add stored XSS via the Switch Language block. The Concrete CMS security team gave thanks M3dium for reporting.
Affected packages (1)
- Packagist/concrete5/concrete5from 0, < 9.4.8
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |