CVE-2026-104480

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-10-02 00:57 UTC ReservedThe CVE id was reserved by its CNA
2. 2026-10-02 02:17 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-10-02 19:16 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.4% in the next 30 days (EPSS).
• Severity: 9.4 CRITICAL (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2026-10-02 02:17 UTC

Last modified

2026-10-02 19:16 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-390

Record status

Awaiting Analysis

Attack profile CVSS 4.0 · 9.4

Attack vector

Network

Complexity

Low

Attack requirements

Present

Privileges needed

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-104480.md and follow it. Check whether this project is affected by CVE-2026-104480. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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