{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-20108", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2025-10-08T11:59:15.372Z", "datePublished": "2026-03-25T16:09:06.788Z", "dateUpdated": "2026-03-25T16:09:06.788Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2026-03-25T16:09:06.788Z"}, "descriptions": [{"lang": "en", "value": "A vulnerability in the web-based management interface of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface of an affected device.\r\n\r This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user of the web-based management interface to click a crafted link. 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."}], "affected": [{"vendor": "Cisco", "product": "Cisco Catalyst SD-WAN Manager", "versions": [{"version": "20.12.1", "status": "affected"}, {"version": "20.12.1_LI_Images", "status": "affected"}, {"version": "20.12.2", "status": "affected"}, {"version": "20.12.3", "status": "affected"}, {"version": "20.12.3.1", "status": "affected"}, {"version": "20.12.4", "status": "affected"}, {"version": "20.12.4.1", "status": "affected"}, {"version": "20.12.5", "status": "affected"}, {"version": "20.12.5.1", "status": "affected"}, {"version": "20.12.5.2", "status": "affected"}, {"version": "20.12.6", "status": "affected"}, {"version": "20.12.6.1", "status": "affected"}, {"version": "20.12.5.3", "status": "affected"}, {"version": "20.13.1", "status": "affected"}, {"version": "20.14.1", "status": "affected"}, {"version": "20.15.1", "status": "affected"}, {"version": "20.15.2", "status": "affected"}, {"version": "20.15.3", "status": "affected"}, {"version": "20.15.3.1", "status": "affected"}, {"version": "20.15.4", "status": "affected"}, {"version": "20.15.4.1", "status": "affected"}, {"version": "20.15.4.2", "status": "affected"}, {"version": "20.16.1", "status": "affected"}, {"version": "20.18.1", "status": "affected"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "cwe", "cweId": "CWE-79"}]}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vmanage-xss-ZqkhP9W9", "name": "cisco-sa-vmanage-xss-ZqkhP9W9"}], "metrics": [{"format": "cvssV3_1", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}}], "exploits": [{"lang": "en", "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}], "source": {"advisory": "cisco-sa-vmanage-xss-ZqkhP9W9", "discovery": "INTERNAL", "defects": ["CSCwq92731"]}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the web-based management interface of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface of an affected device.\r\n\r This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user of the web-based management interface to click a crafted link. 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."}], "id": "CVE-2026-20108", "lastModified": "2026-03-25T16:16:14.420", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "psirt@cisco.com", "type": "Primary"}]}, "published": "2026-03-25T16:16:14.420", "references": [{"source": "psirt@cisco.com", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vmanage-xss-ZqkhP9W9"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "psirt@cisco.com", "type": "Primary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-03-25T20:10:20.782647+00:00", "value": {"mitigation_remediation": ["Apply the latest Cisco Catalyst SD\u2011WAN Manager patch or firmware update as soon as it is released", "Limit access to the web interface to trusted networks or IP ranges and enforce strong, multi\u2011factor authentication", "Educate users to recognize and avoid clicking suspicious links that could trigger cross\u2011site scripting attacks"], "summary": {"action": "Patch Immediately", "impact": "Client\u2011Side Code Execution via Cross\u2011Site Scripting"}, "threat_synthesis": {"affected_systems": "The vulnerable product is the Cisco Catalyst SD\u2011WAN Manager management interface. No specific version numbers are supplied, so any deployment that has not applied the vendor\u2019s fix remains at risk. The attack requires authentication to the web interface and a user who interacts with a maliciously constructed URL.", "description_and_impact": "A flaw in Cisco Catalyst SD\u2011WAN Manager\u2019s web\u2011based management interface lets a remote attacker, who is authenticated to the interface, inject malicious JavaScript because user input is not properly validated. The attacker can persuade a legitimate user to click a crafted link, which then loads and runs arbitrary script code within the user\u2019s browser session. The result is the ability to execute code in the context of the web interface or steal sensitive browser\u2011based information, a classic reflected XSS vulnerability (CWE\u201179).", "risk_and_exploitability": "The base CVSS score of 5.4 indicates moderate severity; the vector is remote with an authenticated user and requires user interaction. EPSS data is not available, and the flaw is not listed in the CISA KEV catalog, suggesting a lower likelihood of widespread exploitation. Nevertheless, any authenticated user exposed to phishing or social\u2011engineering links could fall victim, making the risk significant for organizations that grant broad web\u2011interface access."}}}}, "created": "2026-03-25T21:35:34.443080+00:00", "title": "Cross\u2011Site Scripting in Cisco Catalyst SD\u2011WAN Manager Web Interface", "updated": "2026-03-25T21:35:34.443115+00:00", "vendors": []}