{"id":"CVE-2026-72918","state":"PUBLISHED","title":"Rocket.Chat: Insecure implementation of websocket notifications","description":"Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 7.10.14, 8.0.8, 8.1.7, 8.2.7, 8.3.7, 8.4.5, 8.5.2, and 8.6.1, the stream-notify-user stream in the WebSocket protocol allows an authenticated user to write arbitrary notification bodies because the sender is not checked, and the client-side UI can create an ephemeral fake message in another user's currently open chat. This issue is fixed in versions 7.10.14, 8.0.8, 8.1.7, 8.2.7, 8.3.7, 8.4.5, 8.5.2, and 8.6.1.","publishedAt":"2026-08-10T21:42:36.707Z","updatedAt":"2026-08-11T16:04:45.242Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["RocketChat Rocket.Chat"],"affected":[{"vendor":"RocketChat","product":"Rocket.Chat","versions":[{"version":"< 7.10.14","status":"affected"},{"version":">= 8.0.0, < 8.0.8","status":"affected"},{"version":">= 8.1.0, < 8.1.7","status":"affected"},{"version":">= 8.2.0, < 8.2.7","status":"affected"},{"version":">= 8.3.0, < 8.3.7","status":"affected"},{"version":">= 8.4.0, < 8.4.5","status":"affected"},{"version":">= 8.5.0, < 8.5.2","status":"affected"},{"version":">= 8.6.0, < 8.6.1","status":"affected"}]}],"references":["https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-27jx-236m-3f5j"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72918.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72918","state":"PUBLISHED","datePublished":"2026-08-10T21:42:36.707Z","dateUpdated":"2026-08-11T16:04:45.242Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-10T17:57:26.144Z"},"containers":{"cna":{"title":"Rocket.Chat: Insecure implementation of websocket notifications","descriptions":[{"lang":"en","value":"Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 7.10.14, 8.0.8, 8.1.7, 8.2.7, 8.3.7, 8.4.5, 8.5.2, and 8.6.1, the stream-notify-user stream in the WebSocket protocol allows an authenticated user to write arbitrary notification bodies because the sender is not checked, and the client-side UI can create an ephemeral fake message in another user's currently open chat. This issue is fixed in versions 7.10.14, 8.0.8, 8.1.7, 8.2.7, 8.3.7, 8.4.5, 8.5.2, and 8.6.1."}],"affected":[{"vendor":"RocketChat","product":"Rocket.Chat","versions":[{"version":"< 7.10.14","status":"affected"},{"version":">= 8.0.0, < 8.0.8","status":"affected"},{"version":">= 8.1.0, < 8.1.7","status":"affected"},{"version":">= 8.2.0, < 8.2.7","status":"affected"},{"version":">= 8.3.0, < 8.3.7","status":"affected"},{"version":">= 8.4.0, < 8.4.5","status":"affected"},{"version":">= 8.5.0, < 8.5.2","status":"affected"},{"version":">= 8.6.0, < 8.6.1","status":"affected"}]}],"references":[{"url":"https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-27jx-236m-3f5j","name":"https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-27jx-236m-3f5j","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-10T21:42:36.707Z"},"source":{"advisory":"GHSA-27jx-236m-3f5j","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-11T16:04:20.390453Z","id":"CVE-2026-72918","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":"2026-08-11T16:04:45.242Z"}}]}}}