CVE-2026-20170

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{"affected": [{"affectedData": [{"product": "Cisco Webex Contact Center", "vendor": "Cisco", "versions": [{"status": "affected", "version": "N/A"}]}], "source": "psirt@cisco.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:cisco:webex_contact_center:-:*:*:*:cloud-based:*:*:*", "matchCriteriaId": "C152A05A-CA52-4D69-9531-B577E25B4192", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the Desktop Agent functionality of Cisco Webex Contact Center could have allowed an unauthenticated, remote attacker to conduct cross-site scripting attacks. Cisco has addressed this vulnerability in the Cisco Webex Contact Center service, and no customer action is needed.\r\n\r This vulnerability existed because HTML and script content was not properly handled. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by persuading a user to follow a malicious link. A successful exploit could have allowed the attacker to steal sensitive information from the browser, including authentication and session information."}, {"lang": "es", "value": "Una vulnerabilidad en la funcionalidad de Desktop Agent de Cisco Webex Contact Center podr\u00eda haber permitido a un atacante remoto no autenticado realizar ataques de cross-site scripting. Cisco ha abordado esta vulnerabilidad en el servicio de Cisco Webex Contact Center, y no se requiere ninguna acci\u00f3n por parte del cliente.\nEsta vulnerabilidad exist\u00eda porque el contenido HTML y de script no se manejaba correctamente. Antes de que se abordara esta vulnerabilidad, un atacante podr\u00eda haber explotado esta vulnerabilidad persuadiendo a un usuario para que siguiera un enlace malicioso. Un exploit exitoso podr\u00eda haber permitido al atacante robar informaci\u00f3n sensible del navegador, incluyendo informaci\u00f3n de autenticaci\u00f3n y de sesi\u00f3n."}], "id": "CVE-2026-20170", "lastModified": "2026-10-26T22:10:00.163", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "psirt@cisco.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20170", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-15T16:42:50.336172Z", "version": "2.0.3"}}]}, "published": "2026-04-15T17:17:03.297", "references": [{"source": "psirt@cisco.com", "tags": ["Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webexcc-xss-WEX5nUnA"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-80"}], "source": "psirt@cisco.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Cisco Webex Contact Center", "source": "cna", "vendor": "Cisco"}, "product": "cisco_webex_contact_center", "vendor": "cisco"}], "analysis": {"en": {"generated_at": "2026-04-15T19:18:32.965786+00:00", "value": {"mitigation_remediation": ["Ensure Cisco Webex Contact Center is running the latest software version that includes the internal fix for this issue.", "If the Desktop Agent feature is not required, disable it to remove the attack surface.", "Educate users about the risks of following unsolicited links and conduct regular phishing awareness training."], "summary": {"action": "Monitor", "impact": "Unauthenticated cross\u2011site scripting that can steal browser session data"}, "threat_synthesis": {"affected_systems": "The vulnerability affects the Cisco Webex Contact Center product line, specifically the Desktop Agent functionality. No specific version range is provided, so any installation of the Desktop Agent that has not yet incorporated the vendor\u2019s fix may be impacted.", "description_and_impact": "A cross\u2011site scripting flaw exists in the Desktop Agent component of Cisco Webex Contact Center. The attacker can embed malicious HTML or script that, when a user follows a crafted link, executes in the victim\u2019s browser. The impact is the theft of sensitive information stored in the browser, including authentication tokens and session data, which can lead to unauthorized access to the Webex environment.", "risk_and_exploitability": "The CVSS base score is 6.1, indicating moderate severity. No EPSS score is available and the issue is not listed in CISA\u2019s KEV catalog. Exploitation requires an unauthenticated remote attacker to persuade a user to click a malicious link, meaning it is contingent on user interaction. The risk remains moderate, but as the vendor has issued an internal fix and no customer action is required, the immediate likelihood of exploitation is reduced if the product is current."}}}}, "created": "2026-04-15T19:30:12.380945+00:00", "title": "Unauthenticated XSS in Cisco Webex Contact Center Desktop Agent", "updated": "2026-04-15T21:02:22.621469+00:00", "vendors": ["cisco", "cisco$PRODUCT$cisco_webex_contact_center"]}