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GHSA-j696-6m57-mcrvmedium6.1

Silverstripe CMS XSS Vulnerability

Impact

SilverStripe CMS before 3.6.1 has XSS via an SVG document that is mishandled by (1) the Insert Media option in the content editor or (2) an admin/assets/add pathname, as demonstrated by the admin/pages/edit/EditorToolbar/MediaForm/field/AssetUploadField/upload URI, aka issue SS-2017-017.

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.

silverstripe/cms Packagist
Affected rangeRecorded fix
Earlier releases before 3.6.1Ecosystem versions3.6.1

Version evidence: OSV · GHSA-j696-6m57-mcrv

View original version evidence (154 explicit versions)

Original source description

SilverStripe CMS before 3.6.1 has XSS via an SVG document that is mishandled by (1) the Insert Media option in the content editor or (2) an admin/assets/add pathname, as demonstrated by the admin/pages/edit/EditorToolbar/MediaForm/field/AssetUploadField/upload URI, aka issue SS-2017-017.

References