CVE-2026-104480: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-3q99-x36r-rchh
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CWE-390
Published
Advisory Summary

CVE-2026-104480 is a CRITICAL security vulnerability vulnerability (CWE-390: Detection of Error Condition Without Action) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product detects a specific error, but takes no actions to handle the error.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-104480 at a Glance

CVE Identifier CVE-2026-104480
GHSA Identifier GHSA-3q99-x36r-rchh
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-390: Detection of Error Condition Without Action
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-104480

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-104480, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-390: Detection of Error Condition Without Action, where the product detects a specific error, but takes no actions to handle the error. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

References

NVD — CVE-2026-104480 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-104480
Security Fix Commit FIX COMMIT
https://github.com/discord/libdave/commit/9686fbaea864aa19f0675e486672b6a77811b6a1
daveprotocol.com WEB
https://daveprotocol.com
Software Source Repository REPOSITORY
https://github.com/discord/libdave
Software Release RELEASE
https://github.com/discord/libdave/releases/tag/v1.2.0/cpp

Frequently Asked Questions

What is CVE-2026-104480?
CVE-2026-104480 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-390: Detection of Error Condition Without Action.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-104480?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-104480?
CVE-2026-104480 is classified under CWE-390: Detection of Error Condition Without Action (The product detects a specific error, but takes no actions to handle the error.).
How can I check Maven dependencies for CVE-2026-104480?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-3q99-x36r-rchh",
  "modified" : "2026-10-02T03:31:10Z",
  "published" : "2026-10-02T03:31:10Z",
  "aliases" : [ "CVE-2026-104480" ],
  "details" : "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" : [ {
    "type" : "CVSS_V4",
    "score" : "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-104480"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/discord/libdave/commit/9686fbaea864aa19f0675e486672b6a77811b6a1"
  }, {
    "type" : "WEB",
    "url" : "https://daveprotocol.com"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/discord/libdave"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/discord/libdave/releases/tag/v1.2.0/cpp"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-390" ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-02T02:17:02Z"
  }
}