GitHub Advisoryadvisory · Packagist

GHSA-mm5f-5rqw-574f Concrete CMS has a stored Cross-site Scripting (XSS) vulnerability

MEDIUM Published 2026-03-04 Modified 2026-03-04 Official page ↗
Aliases
CVE-2026-3244
Ecosystem
Packagist
Packages
concrete5/concrete5
Severity
Moderate
CVSS 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
Weaknesses
CWE-79
Reviewed
2026-03-04

Affected packages

• Packagist concrete5/concrete5: < 9.4.8 → fixed in 9.4.8

Description

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.

Related

Alias · CVE (1)

  • 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… vulnerability

Weakness · CWE (1)

  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References