CVE-2026-3240

MEDIUM

4.8

Description

In Concrete CMS below version 9.4.8, a user with permission to edit a page with element Legacy form can perform a stored XSS attack towards high-privilege accounts via the Question field. 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 minhnn42, namdi and quanlna2 from VCSLab-Viettel Cyber Security for reporting.

Details CVE

Score CVSS v3.14.8

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisHIGH

Interaction utilisateurREQUIRED

Publie3/4/2026

Derniere modification3/4/2026

Sourcenvd

Observations honeypot0

Produits affectes

concretecms:concrete_cms

Faiblesses (CWE)

CWE-79

References

https://documentation.concretecms.org/9-x/developers/introduction/version-history/948-release-notes(ff5b8ace-8b95-4078-9743-eac1ca5451de)

https://github.com/concretecms/concretecms/pull/12826(ff5b8ace-8b95-4078-9743-eac1ca5451de)

Correlations IOC

Aucune correlation enregistree

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