CVE-2026-3244: Concrete CMS below version 9.4.8 is vulnerable to Stored XSS in Search Results via Page Names
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.
Other sources
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
— MITRE
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-3244?
CVE-2026-3244 is considered a medium-severity vulnerability due to its potential to facilitate stored cross-site scripting attacks.
How do I fix CVE-2026-3244?
To mitigate CVE-2026-3244, users should upgrade to Concrete CMS version 9.4.8 or later where the vulnerability has been addressed.
What impact does CVE-2026-3244 have on my site?
CVE-2026-3244 allows attackers to inject malicious scripts into search results, which could compromise user sessions or steal sensitive information.
Is CVE-2026-3244 specific to any version of Concrete CMS?
Yes, CVE-2026-3244 affects all versions of Concrete CMS prior to 9.4.8.
Who is affected by CVE-2026-3244?
Any users operating Concrete CMS below version 9.4.8 are vulnerable to CVE-2026-3244.