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GHSA-mm5f-5rqw-574f

Concrete CMS has a stored Cross-site Scripting (XSS) vulnerability

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-3244

Packages

EcosystemPackageAffectedFixed in
Packagist concrete5/concrete5 < 9.4.8 9.4.8

Details

As written in the advisory (Markdown source, shown as plain text).

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 thanks zolpak for reporting.

References

External links from the advisory. They lead to third-party sites.