Moole Vulnerability Database

Find real vulnerabilities before they ship

Medium

CVE-2026-3242

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.

VectorNETWORK

PublishedMar 04, 2026, 03:16

Published Byff5b8ace-8b95-4078-9743-eac1ca5451de

Base Score

Score4.8

Affected Versions

Package (Ecosystem)IntroducedFixedLimit

concrete5/concrete5(Packagist)09.4.8N/A

References

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

Weakness Type

CWE-79

CVSS Metrics

Base Score

4.8

Vector String

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Base SeverityMedium

Version

4.0

Attack Vector (AV)

NETWORK