{"id":"CVE-2026-41127","state":"PUBLISHED","title":"BigBlueButton's missing authorization allows viewer to inject/overwrite captions","description":"BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have a missing authorization that allows viewers to inject/overwrite captions Version 3.0.24 tightened the permissions on who is able to submit captions. No known workarounds are available.","publishedAt":"2026-04-21T23:24:46.671Z","updatedAt":"2026-04-22T13:12:52.166Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["bigbluebutton bigbluebutton"],"affected":[{"vendor":"bigbluebutton","product":"bigbluebutton","versions":[{"version":"< 3.0.24","status":"affected"}]}],"references":["https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-q387-2q28-mg33"],"weaknesses":["CWE-639"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/41xxx/CVE-2026-41127.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41127","state":"PUBLISHED","datePublished":"2026-04-21T23:24:46.671Z","dateUpdated":"2026-04-22T13:12:52.166Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-17T12:59:15.737Z"},"containers":{"cna":{"title":"BigBlueButton's missing authorization allows viewer to inject/overwrite captions","descriptions":[{"lang":"en","value":"BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have a missing authorization that allows viewers to inject/overwrite captions Version 3.0.24 tightened the permissions on who is able to submit captions. No known workarounds are available."}],"affected":[{"vendor":"bigbluebutton","product":"bigbluebutton","versions":[{"version":"< 3.0.24","status":"affected"}]}],"references":[{"url":"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-q387-2q28-mg33","name":"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-q387-2q28-mg33","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-21T23:24:46.671Z"},"source":{"advisory":"GHSA-q387-2q28-mg33","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-22T13:12:43.869394Z","id":"CVE-2026-41127","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":"2026-04-22T13:12:52.166Z"}}]}}}