{"id":"CVE-2026-72918","title":"Rocket.Chat is an open-source, secure, fully customizable communications platform","summary":"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 use…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-862"],"published":"2026-08-10","updated":"2026-09-09","sourceUpdated":"2026-09-09T20:50:00.950","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72918","references":[{"url":"https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-27jx-236m-3f5j","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.002,"epssPercentile":0.10112,"ingestedAt":"2026-09-09T21:22:45.526Z","slug":"CVE-2026-72918","body":"## Overview\n\nRocket.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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}