{"id":"CVE-2023-42804","summary":"BigBlueButton Path Traversal – Reading Certain File Extensions","details":"BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.1 has a path traversal vulnerability that allows an attacker with a valid starting folder path, to traverse and read other files without authentication, assuming the files have certain extensions (txt, swf, svg, png). In version 2.6.0-beta.1, input validation was added on the parameters being passed and dangerous characters are stripped. There are no known workarounds.","aliases":["GHSA-3qjg-229m-vq84"],"modified":"2026-04-10T05:02:15.576108Z","published":"2023-10-30T18:14:41.419Z","database_specific":{"cwe_ids":["CWE-22"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/42xxx/CVE-2023-42804.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/42xxx/CVE-2023-42804.json"},{"type":"ADVISORY","url":"https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3qjg-229m-vq84"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-42804"},{"type":"FIX","url":"https://github.com/bigbluebutton/bigbluebutton/pull/15960"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bigbluebutton/bigbluebutton","events":[{"introduced":"0"},{"fixed":"8002abc33b4c5f3dbdc71b5d66ad2af69466a8c5"}]}],"versions":["2.2-beta-10","2.2-beta-11","2.2-beta-12","2.2-beta-14","2.2-beta-15","2.2-beta-16","2.2-beta-17","2.2-beta-18","2.2-beta-19","2.2-beta-2","2.2-beta-20","2.2-beta-21","2.2-beta-22","2.2-beta-23","2.2-beta-3","2.2-beta-4","2.2-beta-5","2.2-beta-6","2.2-beta-7","2.2-beta-8","2.2-beta-9","2.2-rc-1","2.2-rc-2","2.2-rc-3","dcs-2-a","v0.8","v0.8b4","v0.8b4.0","v0.8rc2","v0.9.0-beta","v2.3-alpha-1","v2.3-alpha-2","v2.3-alpha-3","v2.3-alpha-4","v2.3-alpha-5","v2.3-alpha-6","v2.3-alpha-7","v2.3-alpha-8","v2.3-beta-1","v2.3-beta-2","v2.3-beta-3","v2.3-beta-4","v2.3-beta-5","v2.3-rc-1","v2.3-rc-2","v2.3.0","v2.3.1","v2.4-alpha-1","v2.4-beta-1","v2.4-beta-2","v2.4-beta-3","v2.4-beta-4","v2.6.0-alpha.1","v2.6.0-alpha.2","v2.6.0-alpha.3","v2.6.0-alpha.4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-42804.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}