CVE-2026-104480

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (31st percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 4 sources updated this week
9.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
9.4
EG Score
9.4CRITICALmedium confidence
EG Risk
42
EG Risk 42/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity94% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
31st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 2, 2026

Last Modified

October 2, 2026

Advisory Details (3)

Auto-updated Oct 2, 2026
Patch available. Sources: github_commit.
github_commit Patch Available

commit 9686fbaea864 (discord/libdave)

Patch available: discord/libdave v1.2.0/cpp (contains commit 9686fbaea864)

https://github.com/discord/libdave/commit/9686fbaea864aa19f0675e486672b6a77811b6a1
generic

GitHub - discord/libdave: Libraries supporting Discord's Audio & Video End-to-End Encryption (DAVE) protocol · GitHub

https://github.com/discord/libdave
generic

Discord DAVE Protocol Whitepaper

https://daveprotocol.com/

Vendor Advisories for CVE-2026-104480(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 21× in last 7d / 21× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-04 05:49 UTCGHSA enrichment
  2. 2026-10-04 01:31 UTCGHSA enrichment
  3. 2026-10-03 21:12 UTCGHSA enrichment
  4. 2026-10-03 16:54 UTCEG score recompute
  5. 2026-10-03 16:54 UTCGHSA enrichment
  6. 2026-10-03 14:25 UTCEPSS rescore
  7. 2026-10-03 12:37 UTCGHSA enrichment
  8. 2026-10-03 08:19 UTCGHSA enrichment
  9. 2026-10-03 03:58 UTCGHSA enrichment
  10. 2026-10-02 23:38 UTCGHSA enrichment
  11. 2026-10-02 19:20 UTCGHSA enrichment
  12. 2026-10-02 18:51 UTCEG score recompute
  13. 2026-10-02 18:51 UTCGHSA enrichment
  14. 2026-10-02 18:37 UTCEG score recompute
  15. 2026-10-02 18:36 UTCGHSA enrichment
  16. 2026-10-02 15:21 UTCGHSA enrichment
  17. 2026-10-02 11:02 UTCGHSA enrichment
  18. 2026-10-02 06:45 UTCGHSA enrichment
  19. 2026-10-02 02:28 UTCEG score recompute
  20. 2026-10-02 01:21 UTCEG score recompute
  21. 2026-10-02 01:20 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-104480?
CVE-2026-104480 is a critical vulnerability published on October 2, 2026. 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)…
When was CVE-2026-104480 disclosed?
CVE-2026-104480 was first published on October 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-104480 actively exploited?
CVE-2026-104480 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-104480?
CVE-2026-104480 has a CVSS base score of 9.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-104480?
A fix for CVE-2026-104480 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-104480 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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