{"id":"CVE-2026-65644","state":"PUBLISHED","title":"Rocket.Chat in versions before 8.8.0, 8.7.1, 8.6.2, 8.5.3, 8.4.6, 8.3.8, 8.2.8, 8.1.8, and 7.10.15 has a REST API endpoint POST /api/v1/livechat/visitor that accepts an unauthentic","description":"Rocket.Chat in versions before 8.8.0, 8.7.1, 8.6.2, 8.5.3, 8.4.6, 8.3.8, 8.2.8, 8.1.8, and 7.10.15 has a REST API endpoint POST /api/v1/livechat/visitor that accepts an unauthenticated, unsanitized name field for Livechat visitors. This name is stored raw and later rendered via dangerouslySetInnerHTML in the Omnichannel Queue side panel (InquireSidePanelItem.tsx), injecting a real, clickable HTML link - pointing to any attacker-controlled domain, with arbitrary social-engineering text - into the DOM of any agent viewing the queue.","publishedAt":"2026-08-21T02:53:43.406Z","updatedAt":"2026-08-27T19:19:36.705Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"CISA-ADP"},"assigner":"hackerone","products":["Rocket.Chat Rocket.Chat"],"affected":[{"vendor":"Rocket.Chat","product":"Rocket.Chat","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"8.8.0","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.7.1","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.6.2","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.5.3","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.4.6","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.3.8","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.2.8","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.1.8","versionType":"semver"},{"version":"0","status":"affected","lessThan":"7.10.15","versionType":"semver"}]}],"references":["https://hackerone.com/reports/3872858","https://github.com/RocketChat/Rocket.Chat/pull/41595"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/65xxx/CVE-2026-65644.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-65644","state":"PUBLISHED","datePublished":"2026-08-21T02:53:43.406Z","dateUpdated":"2026-08-27T19:19:36.705Z","assignerShortName":"hackerone","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateReserved":"2026-07-22T15:00:06.103Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Rocket.Chat in versions before 8.8.0, 8.7.1, 8.6.2, 8.5.3, 8.4.6, 8.3.8, 8.2.8, 8.1.8, and 7.10.15 has a REST API endpoint POST /api/v1/livechat/visitor that accepts an unauthenticated, unsanitized name field for Livechat visitors. This name is stored raw and later rendered via dangerouslySetInnerHTML in the Omnichannel Queue side panel (InquireSidePanelItem.tsx), injecting a real, clickable HTML link - pointing to any attacker-controlled domain, with arbitrary social-engineering text - into the DOM of any agent viewing the queue."}],"affected":[{"vendor":"Rocket.Chat","product":"Rocket.Chat","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"8.8.0","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.7.1","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.6.2","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.5.3","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.4.6","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.3.8","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.2.8","versionType":"semver"},{"version":"0","status":"affected","lessThan":"8.1.8","versionType":"semver"},{"version":"0","status":"affected","lessThan":"7.10.15","versionType":"semver"}]}],"references":[{"url":"https://hackerone.com/reports/3872858"},{"url":"https://github.com/RocketChat/Rocket.Chat/pull/41595"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","type":"CWE","lang":"en","description":"CWE-79 Cross-site Scripting (XSS) - DOM"}]}],"providerMetadata":{"shortName":"hackerone","orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateUpdated":"2026-08-21T02:53:43.406Z"},"credits":[{"lang":"en","value":"Hill N (hillng)","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-08-27T19:19:28.284092Z","id":"CVE-2026-65644","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-27T19:19:36.705Z"}}]}}}