CVE-2026-81918
Concrete CMS below 9.5.3 is vulnerable to Stored XSS via the Date Format field in the Page Attribute Display block
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
Concrete CMS below 9.5.3 is vulnerable to Stored XSS via the Date Format field in the Page Attribute Display block. A user with edit_page_contents permissions could store a payload which executes in the browser of any visitor who viewed a page where the block was configured to display a date-type attribute. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 4.8 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Oriol Ortiz for reporting.
| CWE | CWE-79 |
| Vendor | concrete cms |
| Product | concrete cms |
| Published | Sep 11, 2026 |
| Last Updated | Sep 14, 2026 |
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Affected Versions
Concrete CMS / Concrete CMS
5.0.0 ≤ 9.5.2
References
Credits
orisec