CVE-2026-3244Network attack vector

Stored XSS via unencoded search-result page names

Published Mar 4, 2026 · Updated Mar 4, 2026

Stored XSS in Concrete CMS before 9.4.8 allows remote authenticated users to execute JavaScript through crafted page names in search results. The search block view outputs getCollectionName() directly, while highlightedMarkup() processes page content and query text before HTML encoding. Administrator privileges are required to store the payload, and another user's search-result view executes it in that user's browser context.

CVSS severity4.8
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in Concrete CMS before 9.4.8 allows remote authenticated users to execute JavaScript through crafted page names in search results. The search block view outputs getCollectionName() directly, while highlightedMarkup() processes page content and query text before HTML encoding. Administrator privileges are required to store the payload, and another user's search-result view executes it in that user's browser context.

The record

CVE
CVE-2026-3244
Published
Mar 4, 2026
Updated
Mar 4, 2026
Vendor
Concrete CMS
Product
Concrete CMS
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5 <9.4.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Concrete CMS · Concrete CMSversion=5 <9.4.8

Published CVSS scores

4.8ConcreteCMSCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo