{"id":"CVE-2023-29529","summary":"matrix-js-sdk vulnerable to invisible eavesdropping in group calls","details":"matrix-js-sdk is the Matrix Client-Server SDK for JavaScript and TypeScript. An attacker present in a room where an MSC3401 group call is taking place can eavesdrop on the video and audio of participants using matrix-js-sdk, without their knowledge. To affected matrix-js-sdk users, the attacker will not appear to be participating in the call. This attack is possible because matrix-js-sdk's group call implementation accepts incoming direct calls from other users, even if they have not yet declared intent to participate in the group call, as a means of resolving a race condition in call setup. Affected versions do not restrict access to the user's outbound media in this case. Legacy 1:1 calls are unaffected. This is fixed in matrix-js-sdk 24.1.0. As a workaround, users may hold group calls in private rooms where only the exact users who are expected to participate in the call are present.","aliases":["GHSA-6g67-q39g-r79q"],"modified":"2026-09-15T03:46:10.974734088Z","published":"2023-04-14T18:21:17.050Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/29xxx/CVE-2023-29529.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-862"]},"references":[{"type":"WEB","url":"https://github.com/matrix-org/matrix-js-sdk/releases/tag/v24.1.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/29xxx/CVE-2023-29529.json"},{"type":"ADVISORY","url":"https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-6g67-q39g-r79q"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-29529"},{"type":"FIX","url":"https://github.com/matrix-org/matrix-spec-proposals/pull/3401"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/matrix-org/matrix-js-sdk","events":[{"introduced":"0"},{"fixed":"7d45947fb3dc4b0e291e03adac5348ad8eeaf32a"}],"database_specific":{"cpe":"cpe:2.3:a:matrix:javascript_sdk:*:*:*:*:*:node.js:*:*","extracted_events":[{"introduced":"0"},{"fixed":"24.1.0"}],"source":["AFFECTED_FIELD","CPE_RANGE","REFERENCES"]}}],"versions":["v24.1.0-rc.1","v8.1.0","v8.1.0-rc.1","v8.0.0","v7.1.0","v7.1.0-rc.1","v5.0.1","v2.4.1","v2.0.1","v2.0.1-rc.2","v2.0.1-rc.1","v1.0.0","v1.0.0-rc.2","v1.0.0-rc.1","v0.11.0","v0.11.0-rc.1","v0.10.7","v0.10.7-rc.1","v0.10.5","v0.10.5-rc.1","v0.10.3","v0.10.2","v0.10.3-rc.1","v0.10.2-rc.1","v0.8.3","v0.8.3-rc.1","v0.8.2","v0.8.1","v0.8.1-rc.1","v0.8.0","v0.7.10","v0.7.9","v0.7.4","v0.7.4-rc.1","v0.7.2","v0.7.1-rc.1","v0.6.4","v0.6.4-rc.2","v0.6.2","v0.6.1","v0.6.0-rc2","v0.6.0-rc1","v0.5.6","v0.5.5","v0.5.4","v0.5.3","v0.5.2","v0.5.1","v0.5.0","v0.4.2","v0.4.1","v0.2.2","v0.2.1","v0.2.0","v0.1.1","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-29529.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N"}]}