What is the CVSS score of CVE-2026-3244?

CVE-2026-3244 has a CVSS 3.1 base score of 4.8 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Concrete Cms are affected by CVE-2026-3244?

Organizations using Concrete CMS below should be aware of moderate risk from CVE-2026-3244, a cross-site scripting vulnerability rated CVSS 4.8.. A patch is available.

Is there a public PoC exploit available for CVE-2026-3244?

Yes, a public proof-of-concept exploit is available for CVE-2026-3244. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-3244?

Within 30 days: Identify affected systems running Concrete CMS below and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Concrete Cms CVE-2026-3244

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-03-04 ff5b8ace-8b95-4078-9743-eac1ca5451de

GHSA-mm5f-5rqw-574f

XSS Concrete Cms Concretecms

4.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.8 MEDIUM

AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:05 vuln.today

PoC Detected

Mar 04, 2026 - 21:37 vuln.today

Public exploit code

Patch released

Mar 04, 2026 - 21:37 nvd

Patch available

CVE Published

Mar 04, 2026 - 02:15 nvd

MEDIUM 4.8

DescriptionCVE.org

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

AnalysisAI

Concrete CMS versions below 9.4.8 contain a stored XSS vulnerability in the search block where unencoded page names and content are rendered in search results, allowing authenticated administrators to inject malicious JavaScript that executes for other users. Public exploit code exists for this vulnerability, which requires high privileges and user interaction to exploit. The vulnerability affects confidentiality and integrity but not availability.

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Concrete Cms. 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/

RemediationAI

A vendor patch is available — apply it immediately. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.