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harden: add output encoding in main.js #23

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harden: add output encoding in main.js #23

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6 changes: 5 additions & 1 deletion src/cssfontface/main.js
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Original file line number Diff line number Diff line change
Expand Up @@ -115,7 +115,11 @@ async function doCssFontFaceJailbreak() {

kernel_patches(kpatches_u8);

const bin_rsp = await fetch(sessionStorage.getItem("payload_path"));
const payload_path = sessionStorage.getItem("payload_path");
if (!payload_path || /^[a-z][a-z0-9+\-.]*:\/\//i.test(payload_path) || payload_path.startsWith("//")) {
throw new Error("Invalid payload_path: absolute URLs are not allowed");
}
const bin_rsp = await fetch(payload_path);
const bin_buf = await bin_rsp.arrayBuffer();
const bin_u8 = new Uint8Array(bin_buf);

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