CVE Catalog

CVE-2026-104480

CriticalCVSS 9.4
Published: Translated: NVD NIST

Summary

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 could cause clients to accept an unauthorized member into the end-to-end encrypted media session.

Risk Assessment

This can compromise the confidentiality and integrity of audio and video, allowing eavesdropping or content modification.

Recommendation

Update libdave to version 1.2.0 or later, which includes the fix.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS