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This PoC shows how a valid SVG file (i.e., XML) can embed JavaScript code
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| <?xml version="1.0" encoding="UTF-8" standalone="no"?> | |
| <svg xmlns="http://www.w3.org/2000/svg" | |
| width="420" height="140" | |
| onload="init(evt)"> | |
| <title>SVG JavaScript PoC (benign)</title> | |
| <defs> | |
| <style><![CDATA[ | |
| text { font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif; } | |
| ]]></style> | |
| </defs> | |
| <rect x="0" y="0" width="100%" height="100%" fill="#f3f4f6" /> | |
| <text x="20" y="50" font-size="20" fill="#111827">This SVG contains an inline <script>.</text> | |
| <text x="20" y="85" font-size="16" fill="#374151">If you open this image in a browser, you’ll see an alert.</text> | |
| <script type="application/ecmascript"><![CDATA[ | |
| function init(evt) { | |
| // This is where attackers would put their payload. | |
| alert('Hello from inside an SVG! (PoC)'); | |
| } | |
| ]]></script> | |
| </svg> |
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