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CVE PROGRAM SOURCE RECORD9.4 Critical

CVE-2026-104480

Improper MLS Welcome roster validation in Discord libdave allows unauthorized group membership

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Status
Published
Published
Updated
Assigning organization
Bugcrowd

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Discord libdave

Default version status: unaffected

  • 1.1.0 to < 1.2.0affected
  • 7b15f1fc16f159da0478aa6be909e38f1e957833 to < 9686fbaea864aa19f0675e486672b6a77811b6a1affected

References