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GHSA-cchq-397m-q2qmmedium6.1

Grav CMS is vulnerable to Cross Site Scripting (XSS) in the page editor

Impact

Grav CMS 1.7.49 is vulnerable to Cross Site Scripting (XSS). The page editor allows authenticated users to edit page content via a Markdown editor. The editor fails to properly sanitize tags, allowing stored XSS payloads to execute when pages are viewed in the admin interface.

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.

getgrav/grav Packagist
Affected rangeRecorded fix
Earlier releases through 1.7.49 (inclusive)Ecosystem versionsNot recorded

Version evidence: OSV · GHSA-cchq-397m-q2qm

View original version evidence (280 explicit versions)

Original source description

Grav CMS 1.7.49 is vulnerable to Cross Site Scripting (XSS). The page editor allows authenticated users to edit page content via a Markdown editor. The editor fails to properly sanitize <script> tags, allowing stored XSS payloads to execute when pages are viewed in the admin interface.

References