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GHSA-9v2g-37mp-qpxfhigh7.3

Concrete CMS has Stored XSS through its height parameter

Impact

Concrete CMS 9.5.0 and below has Stored XSS on the height parameter. The controller does not validate or sanitize $height. Any user with editor privileges can inject malicious JavaScript that executes in the context of any visitor's browser, potentially leading to session hijacking, credential theft, or other malicious actions.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

concrete5/concrete5 Packagist
Affected rangeRecorded fix
Earlier releases before 9.5.1Ecosystem versions9.5.1

Version evidence: OSV · GHSA-9v2g-37mp-qpxf

View original version evidence (89 explicit versions)

Original source description

Concrete CMS 9.5.0 and below has Stored XSS on the height parameter. The controller does not validate or sanitize $height. Any user with editor privileges can inject malicious JavaScript that executes in the context of any visitor's browser, potentially leading to session hijacking, credential theft, or other malicious actions.

References