CVE-2026-104480 (GCVE-0-2026-104480)

Vulnerability from cvelistv5 – Published: 2026-10-02 00:57 – Updated: 2026-10-02 00:57
VLAI
Title
Improper MLS Welcome roster validation in Discord libdave allows unauthorized group membership
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 (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.
Severity
9.4 (Critical)
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
CWE
  • CWE-390 - Detection of Error Condition Without Action
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version
Discord libdave Affected: 1.1.0 , < 1.2.0 (semver)
Affected: 7b15f1fc16f159da0478aa6be909e38f1e957833 , < 9686fbaea864aa19f0675e486672b6a77811b6a1 (git)
Create a notification for this product.
Credits
MDL (https://heartbreak.ing)
Show details on NVD website
To clipboard 

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