{"id":"CVE-2025-55200","state":"PUBLISHED","title":"BigBlueButton vulnerable to Stored XSS via name of user at Shared Notes","description":"BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.13, the \"Shared Notes\" feature contains a Stored Cross-Site Scripting (XSS) vulnerability with the input location being the \"Username\" field and the output location on the \"Shared Notes\" page, when a user with a malicious username is editing content. This vulnerability allows a low-privileged user to execute arbitrary JavaScript in the context of higher-privileged users (e.g., Admins) who open the Shared Notes page. Version 3.0.13 fixes the issue.","publishedAt":"2025-10-09T18:51:57.884Z","updatedAt":"2025-10-09T19:08:17.415Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["bigbluebutton bigbluebutton"],"affected":[{"vendor":"bigbluebutton","product":"bigbluebutton","versions":[{"version":"< 3.0.13","status":"affected"}]}],"references":["https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-9jv9-cjrm-grj2","https://github.com/bigbluebutton/bbb-pads/pull/67","https://github.com/bigbluebutton/bigbluebutton/pull/23693","https://github.com/bigbluebutton/bbb-pads/releases/tag/v1.5.4"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:09:31.862Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/55xxx/CVE-2025-55200.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-55200","state":"PUBLISHED","datePublished":"2025-10-09T18:51:57.884Z","dateUpdated":"2025-10-09T19:08:17.415Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-08-08T21:55:07.965Z"},"containers":{"cna":{"title":"BigBlueButton vulnerable to Stored XSS via name of user at Shared Notes","descriptions":[{"lang":"en","value":"BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.13, the \"Shared Notes\" feature contains a Stored Cross-Site Scripting (XSS) vulnerability with the input location being the \"Username\" field and the output location on the \"Shared Notes\" page, when a user with a malicious username is editing content. This vulnerability allows a low-privileged user to execute arbitrary JavaScript in the context of higher-privileged users (e.g., Admins) who open the Shared Notes page. Version 3.0.13 fixes the issue."}],"affected":[{"vendor":"bigbluebutton","product":"bigbluebutton","versions":[{"version":"< 3.0.13","status":"affected"}]}],"references":[{"url":"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-9jv9-cjrm-grj2","name":"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-9jv9-cjrm-grj2","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/bigbluebutton/bbb-pads/pull/67","name":"https://github.com/bigbluebutton/bbb-pads/pull/67","tags":["x_refsource_MISC"]},{"url":"https://github.com/bigbluebutton/bigbluebutton/pull/23693","name":"https://github.com/bigbluebutton/bigbluebutton/pull/23693","tags":["x_refsource_MISC"]},{"url":"https://github.com/bigbluebutton/bbb-pads/releases/tag/v1.5.4","name":"https://github.com/bigbluebutton/bbb-pads/releases/tag/v1.5.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-10-09T18:51:57.884Z"},"source":{"advisory":"GHSA-9jv9-cjrm-grj2","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-10-09T19:08:12.867816Z","id":"CVE-2025-55200","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":"2025-10-09T19:08:17.415Z"}}]}}}