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CVSS Score
-| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| typo3/cms | composer | >= 6.2.0, <= 6.2.38 | 6.2.39 |
| typo3/cms | composer | >= 7.0.0, <= 7.1.0 | 7.2.0 |
The vulnerability stemmed from the third-party 'websvg' component (svg.swf) which handled SVG rendering via Flash. The PHP methods PageRenderer::loadSvg() and ScalableVectorGraphicsContentObject::render() were entry points that enabled loading this vulnerable component. The commit removed these integration points and the component itself, confirming their role in the attack surface. While the XSS execution occurred in the Flash component, these PHP functions facilitated its inclusion.