{"id":"CVE-2026-20233","state":"PUBLISHED","title":"Cisco Webex Meetings Cross-Site Scripting Vulnerability","description":"A vulnerability in the web-based user interface of Cisco Webex Meetings could have allowed an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack. Cisco has addressed this vulnerability in the Webex Meetings service, and no customer action is needed.\r\n\r\nThis vulnerability existed because of insufficient validation of user input. 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 execute arbitrary script code in the browser of the targeted user or access sensitive, browser-based information.","publishedAt":"2026-06-03T16:06:06.659Z","updatedAt":"2026-06-03T17:49:49.471Z","severity":{"score":6.1,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","source":"cisco"},"assigner":"cisco","products":["Cisco Cisco Webex Meetings"],"affected":[{"vendor":"Cisco","product":"Cisco Webex Meetings","defaultStatus":"unknown","versions":[{"version":"39.7.7","status":"affected"},{"version":"39.9","status":"affected"},{"version":"40.4.10","status":"affected"},{"version":"39.6","status":"affected"},{"version":"40.6.2","status":"affected"},{"version":"39.8.2","status":"affected"},{"version":"39.8.4","status":"affected"},{"version":"40.1","status":"affected"},{"version":"39.11","status":"affected"},{"version":"39.7.4","status":"affected"},{"version":"39.9.1","status":"affected"},{"version":"40.4","status":"affected"},{"version":"40.6","status":"affected"},{"version":"39.7","status":"affected"},{"version":"39.8","status":"affected"},{"version":"39.8.3","status":"affected"},{"version":"40.2","status":"affected"},{"version":"39.10","status":"affected"},{"version":"42.6","status":"affected"},{"version":"42.7","status":"affected"},{"version":"42.8","status":"affected"},{"version":"42.9","status":"affected"},{"version":"42.10","status":"affected"},{"version":"42.11","status":"affected"},{"version":"42.12","status":"affected"},{"version":"43.1","status":"affected"},{"version":"43.2","status":"affected"},{"version":"43.3","status":"affected"},{"version":"43.4","status":"affected"},{"version":"43.4.1","status":"affected"},{"version":"43.4.2","status":"affected"},{"version":"43.5.0","status":"affected"},{"version":"43.6.0","status":"affected"},{"version":"43.6.1","status":"affected"},{"version":"43.7","status":"affected"},{"version":"43.8","status":"affected"},{"version":"43.9","status":"affected"},{"version":"43.10","status":"affected"},{"version":"43.11","status":"affected"},{"version":"43.12","status":"affected"},{"version":"44.1","status":"affected"},{"version":"44.2","status":"affected"},{"version":"44.3","status":"affected"},{"version":"44.4","status":"affected"},{"version":"44.5","status":"affected"},{"version":"44.6","status":"affected"},{"version":"44.7","status":"affected"},{"version":"44.8","status":"affected"},{"version":"44.9","status":"affected"},{"version":"44.10","status":"affected"},{"version":"44.11","status":"affected"},{"version":"44.12","status":"affected"},{"version":"45.1","status":"affected"},{"version":"45.2","status":"affected"},{"version":"45.3","status":"affected"},{"version":"45.4","status":"affected"}]}],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-xss-jw3NeQzS"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/20xxx/CVE-2026-20233.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-20233","state":"PUBLISHED","datePublished":"2026-06-03T16:06:06.659Z","dateUpdated":"2026-06-03T17:49:49.471Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2025-10-08T11:59:15.399Z"},"containers":{"cna":{"title":"Cisco Webex Meetings Cross-Site Scripting Vulnerability","descriptions":[{"lang":"en","value":"A vulnerability in the web-based user interface of Cisco Webex Meetings could have allowed an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack. Cisco has addressed this vulnerability in the Webex Meetings service, and no customer action is needed.\r\n\r\nThis vulnerability existed because of insufficient validation of user input. 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 execute arbitrary script code in the browser of the targeted user or access sensitive, browser-based information."}],"affected":[{"vendor":"Cisco","product":"Cisco Webex Meetings","defaultStatus":"unknown","versions":[{"version":"39.7.7","status":"affected"},{"version":"39.9","status":"affected"},{"version":"40.4.10","status":"affected"},{"version":"39.6","status":"affected"},{"version":"40.6.2","status":"affected"},{"version":"39.8.2","status":"affected"},{"version":"39.8.4","status":"affected"},{"version":"40.1","status":"affected"},{"version":"39.11","status":"affected"},{"version":"39.7.4","status":"affected"},{"version":"39.9.1","status":"affected"},{"version":"40.4","status":"affected"},{"version":"40.6","status":"affected"},{"version":"39.7","status":"affected"},{"version":"39.8","status":"affected"},{"version":"39.8.3","status":"affected"},{"version":"40.2","status":"affected"},{"version":"39.10","status":"affected"},{"version":"42.6","status":"affected"},{"version":"42.7","status":"affected"},{"version":"42.8","status":"affected"},{"version":"42.9","status":"affected"},{"version":"42.10","status":"affected"},{"version":"42.11","status":"affected"},{"version":"42.12","status":"affected"},{"version":"43.1","status":"affected"},{"version":"43.2","status":"affected"},{"version":"43.3","status":"affected"},{"version":"43.4","status":"affected"},{"version":"43.4.1","status":"affected"},{"version":"43.4.2","status":"affected"},{"version":"43.5.0","status":"affected"},{"version":"43.6.0","status":"affected"},{"version":"43.6.1","status":"affected"},{"version":"43.7","status":"affected"},{"version":"43.8","status":"affected"},{"version":"43.9","status":"affected"},{"version":"43.10","status":"affected"},{"version":"43.11","status":"affected"},{"version":"43.12","status":"affected"},{"version":"44.1","status":"affected"},{"version":"44.2","status":"affected"},{"version":"44.3","status":"affected"},{"version":"44.4","status":"affected"},{"version":"44.5","status":"affected"},{"version":"44.6","status":"affected"},{"version":"44.7","status":"affected"},{"version":"44.8","status":"affected"},{"version":"44.9","status":"affected"},{"version":"44.10","status":"affected"},{"version":"44.11","status":"affected"},{"version":"44.12","status":"affected"},{"version":"45.1","status":"affected"},{"version":"45.2","status":"affected"},{"version":"45.3","status":"affected"},{"version":"45.4","status":"affected"}]}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-xss-jw3NeQzS","name":"cisco-sa-webex-xss-jw3NeQzS"}],"metrics":[{"format":"cvssV3_1","cvssV3_1":{"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"cwe"}]}],"providerMetadata":{"shortName":"cisco","orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateUpdated":"2026-06-03T16:06:06.659Z"},"exploits":[{"lang":"en","value":"The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}],"source":{"advisory":"cisco-sa-webex-xss-jw3NeQzS","discovery":"EXTERNAL","defects":["CSCwt96631"]}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-03T17:46:57.004996Z","id":"CVE-2026-20233","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-03T17:49:49.471Z"}}]}}}