{"id":"CVE-2026-104480","revision":null,"records":[{"revision":"50f4268867db443faa669be54991039a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-104480","aliases":[],"title":"Improper MLS Welcome roster validation in Discord libdave allows unauthorized group membership","description":"Discord libdave before 1.2.0 did not reject an MLS Welcome message when the resulting group roster contained an unrecognized participant. An attacker in control of the DAVE signaling path (the voice gateway, or an equivalent position able to add, alter, or withhold signaling messages to a client) could cause affected clients to accept an unauthorized member into the end-to-end encrypted media session, compromising the confidentiality and integrity of audio and video.","state":0,"publishedAt":"2026-10-02T00:57:55.648+00:00","modifiedAt":"2026-10-02T18:18:52.157+00:00","affected":[{"ecosystem":"https://github.com","name":"discord/libdave","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Discord\",\n                    \"product\": \"libdave\",\n                    \"modules\": [\n                        \"C++ library\"\n                    ],\n                    \"collectionURL\": \"https://github.com\",\n                    \"packageName\": \"discord/libdave\",\n                    \"repo\": \"https://github.com/discord/libdave\",\n                    \"programFiles\": [\n                        \"cpp/src/mls/session.cpp\"\n                    ],\n                    \"programRoutines\": [\n                        {\n                            \"name\": \"discord::dave::mls::Session::VerifyWelcomeState\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"1.1.0\",\n                            \"status\": \"affected\",\n                            \"lessThan\": \"1.2.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7b15f1fc16f159da0478aa6be909e38f1e957833\",\n                            \"status\": \"affected\",\n                            \"lessThan\": \"9686fbaea864aa19f0675e486672b6a77811b6a1\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","score":9.4,"severity":"CRITICAL"}],"references":["https://github.com/discord/libdave/commit/9686fbaea864aa19f0675e486672b6a77811b6a1","https://github.com/discord/libdave/releases/tag/v1.2.0/cpp","https://daveprotocol.com/","https://github.com/discord/libdave"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-104480","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-104480","identifiers":["CVE-2026-104480"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EPSS backfill.","generation":"2026-11-11T19:58:45.4661486+00:00","complete":true,"records":1097,"lastAttemptAt":"2026-11-11T19:58:45.4661486+00:00","lastSuccessAt":"2026-11-11T19:58:45.6274866+00:00","error":null,"lastVerifiedAt":"2026-11-11T19:58:45.6274869+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-0feae4fee9a0467f9dde710515b6c624","complete":false,"records":13753,"lastAttemptAt":"2026-11-11T19:59:11.1509472+00:00","lastSuccessAt":"2026-11-11T19:59:11.147+00:00","error":"100 identifier lookups failed; latest failures include request timeout. 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