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Medium severity · published Mar 4, 2026
CVE-2026-3244
Concrete CMS below version 9.4.8 is vulnerable to Stored XSS in Search Results via Page Names
4.8
CVSS
0.2%
EPSS
No
On KEV
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 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
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 11% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CC
Concrete CMS · Concrete CMS
5 before 9.4.8 · source: vendor, NVD
Affected product
CC
Concrete CMS
Concrete CMS
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3244
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3244
Patch
https://documentation.concretecms.org/9-x/developers/introduction/version-history/948-release-notes
Exploit
https://github.com/concretecms/concretecms/pull/12826
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