CVE-2026-3244

In Concrete CMS below version 9.4.8, A stored cross-site scripting (XSS) vulnerability exists in the search block where page names and content are rendered without proper HTML encoding in search results. This allows authenticated, rogue administrators to inject malicious JavaScript through page names that executes when users search for and view those pages in search results. 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 zolpak for reporting

Score

CVSS 4.0 4.8 Medium

Status

Analyzed - ff5b8ace-8b95-4078-9743-eac1ca5451de

Published

2026-03-04

Last modified

2026-03-04

Weaknesses

CWE-79

Affected products

• Concrete Cms (Concrete Cms)
• Concrete Cms (Concretecms)

References

• https://documentation.concretecms.org/9-x/developers/introduction/version-history/948-release-notes
• https://github.com/concretecms/concretecms/pull/12826