Stored cross site scripting on tags

MEDIUM 5.4CVE-2023-28476 · GHSA-2ggc-552c-rmqr · Published 28/04/2023 · updated 17/06/2026

In short

CVE-2023-28476 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 on Tags on uploaded files.

NVD description

Concrete CMS (previously concrete5) in versions 9.0 through 9.1.3 is vulnerable to Stored XSS on Tags on uploaded files.

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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