CVE-2026-3242 - Vulnerability Details - OpenCVE

In Concrete CMS below version 9.4.8, a rogue administrator can add stored XSS via the Switch Language block. 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 M3dium for reporting.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

No data.

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://documentation.concretecms.org/9-x/developers/introduction/version-history/948-release-notes
https://github.com/concretecms/concretecms/pull/12826

History

Wed, 04 Mar 2026 03:00:00 +0000

Type	Values Removed	Values Added
Description		In Concrete CMS below version 9.4.8, a rogue administrator can add stored XSS via the Switch Language block. 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 M3dium for reporting.
Title		Concrete CMS below 9.4.8 is vulnerable to Stored XSS in the Switch Language block
Weaknesses		CWE-79
References		https://documentation.concretecms.org/9-x/developers/introduction/version-history/948-release-notes https://github.com/concretecms/concretecms/pull/12826
Metrics		cvssV4_0 `{'score': 4.8, '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'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: ConcreteCMS

Published: 2026-03-04T02:00:38.994Z

Updated: 2026-03-04T02:01:48.668Z

Reserved: 2026-02-26T02:40:01.142Z

Link: CVE-2026-3242

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-03-04T03:16:05.270

Modified: 2026-03-04T03:16:05.270

Link: CVE-2026-3242

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-79

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