CVE-2024-2179: Concrete CMS version 9 before 9.2.7 is vulnerable to Stored XSS via the Name field of a Group type

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-03-05 · updated 2026-06-17
Weakness: CWE-79

Description

Concrete CMS version 9 before 9.2.7 is vulnerable to Stored XSS via the Name field of a Group type since there is insufficient validation of administrator provided data for that field. A rogue administrator could inject malicious code into the Name field which might be executed when users visit the affected page. The Concrete CMS security team gave this vulnerability a CVSS v3.1 score of 2.2 with a vector of AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N Concrete versions below 9 do not include group types so they are not affected by this vulnerability. Thanks Luca Fuda for reporting.

Affected products

Concrete CMS: from 9.0.0 before 9.2.7 — fixed in 9.2.7

How to fix

Upgrade to a fixed version: Concrete CMS 9.2.7. Check the vendor advisory for mitigations.

References

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