{"id":"CLEANSTART-2024-FT51773","summary":"logic error in the room key sharing functionality of matrix-js-sdk (aka Matrix Javascript SDK) before 12","details":"Security vulnerability affects the element-web package. A logic error in the room key sharing functionality of matrix-js-sdk (aka Matrix Javascript SDK) before 12.","modified":"2026-10-01T09:15:43.142581139Z","published":"2026-10-01T07:32:21.645848Z","upstream":["CVE-2021-40823"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2024/CLEANSTART-2024-FT51773.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2021-40823"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40823"}],"affected":[{"package":{"name":"element-web","ecosystem":"CleanStart"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.4-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2024/CLEANSTART-2024-FT51773.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}