{"cve":"CVE-2023-43797","nvd":{"published":"2023-10-30T23:15:08.317","modified":"2026-06-17T06:26:27.910","status":"Modified","description":"BigBlueButton is an open-source virtual classroom. Prior to versions 2.6.11 and 2.7.0-beta.3, Guest Lobby was vulnerable to cross-site scripting when users wait to enter the meeting due to inserting unsanitized messages to the element using unsafe innerHTML. Text sanitizing was added for lobby messages starting in versions 2.6.11 and 2.7.0-beta.3. There are no known workarounds.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79"],"references":["https://github.com/bigbluebutton/bigbluebutton/commit/304bc851a00558f99a908880f4ac44234a074c9d","https://github.com/bigbluebutton/bigbluebutton/pull/18392","https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-v6wg-q866-h73x","https://github.com/bigbluebutton/bigbluebutton/commit/304bc851a00558f99a908880f4ac44234a074c9d","https://github.com/bigbluebutton/bigbluebutton/pull/18392"],"products":["bigbluebutton:bigbluebutton"],"source":"nvd","synced_at":"2026-10-19T21:40:11.519948003+00:00"},"epss":{"cve":"CVE-2023-43797","score":0.00466,"percentile":0.40332,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}