CVE-2026-3242
Concrete CMS below 9.4.8 is vulnerable to Stored XSS in the Switch Language block
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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 this vulnerability a CVSS v.4.0 score of 4.8 with vector 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. Thanks M3dium for reporting.
| CWE | CWE-79 |
| Vendor | concrete cms |
| Product | concrete cms |
| Published | Mar 4, 2026 |
| Last Updated | Mar 4, 2026 |
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Affected Versions
Concrete CMS / Concrete CMS
5 < 9.4.8
References
Credits
🔍 M3dium