Stored cross site scripting via container name

MEDIUM 5.4CVE-2023-28471 · GHSA-9h33-5fxw-r2xv · Published 28/04/2023 · updated 17/06/2026

In short

CVE-2023-28471 is a MEDIUM (CVSS 5.4) vulnerability affecting concrete5/concrete5, concrete cms (concretecms).
Chance of exploitation in the next 30 days (EPSS): 0.54%, higher than 45.6% of all vulnerabilities.
Fix: update to 9.2.0 or later.

Package	Affected versions	Patched versions
concrete5/concrete5 Packagist	`< 9.2.0`	`9.2.0`
concrete cms concretecms	`< 9.2.0`	`9.2.0`

Concrete CMS (previously concrete5) before 9.2 is vulnerable to Stored XSS via a container name.

NVD description

Concrete CMS (previously concrete5) in versions 9.0 through 9.1.3 is vulnerable to Stored XSS via a container name.

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Package

Affected versions

Patched versions

Packagist

< 9.2.0

9.2.0

< 9.2.0

9.2.0

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