{"id":"CVE-2026-27467","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-27467","generatedAt":"2026-10-28T00:19:01.020Z","title":"Media is discarded at the server side, so it isn't audible to any participants, but this may allow for malicious server operators to access audio data.","description":"BigBlueButton is an open-source virtual classroom. In versions 3.0.19 and below, when first joining a session with the microphone muted, the client sends audio to the server regardless of mute state. Media is discarded at the server side, so it isn't audible to any participants, but this may allow for malicious server operators to access audio data. The behavior is only incorrect between joining the meeting and the first time the user unmutes. This issue has been fixed in version 3.0.20.","published":"2026-02-21T08:16:12.000Z","lastModified":"2026-06-17T10:27:12.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":2.4,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N"},"cwe":["CWE-200"],"affected":["bigbluebutton/bigbluebutton"],"epss":{"score":0.00207,"percentile":0.10689,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/bigbluebutton/bigbluebutton/commit/3aa47832bc2b17178799bd932453c226e8f95703","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-6gj9-5rhm-68j8","tags":["Patch","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-27467","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}