Search
Find a vulnerability
Search criteria
ⓘ
Use this form to refine search results.
Full-text search supports keyword queries with ranking and filtering.
You can combine vendor, product, and sources to narrow results.
Enable “Apply ordering” to sort by date instead of relevance.
2 vulnerabilities found for libdave by Discord
CVE-2026-104480 (GCVE-0-2026-104480)
Vulnerability from nvd – Published: 2026-10-02 00:57 – Updated: 2026-10-02 18:18
VLAI
EPSS
VEX
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
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 18:18 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/discord/libdave/commit/9686fba… | patch |
| https://github.com/discord/libdave/releases/tag/v… | release-notes |
| https://daveprotocol.com/ | technical-description |
| https://github.com/discord/libdave | product |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-104480",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-02T18:18:39.777597Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-02T18:18:52.157Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://github.com",
"defaultStatus": "unaffected",
"modules": [
"C++ library"
],
"packageName": "discord/libdave",
"product": "libdave",
"programFiles": [
"cpp/src/mls/session.cpp"
],
"programRoutines": [
{
"name": "discord::dave::mls::Session::VerifyWelcomeState"
}
],
"repo": "https://github.com/discord/libdave",
"vendor": "Discord",
"versions": [
{
"lessThan": "1.2.0",
"status": "affected",
"version": "1.1.0",
"versionType": "semver"
},
{
"lessThan": "9686fbaea864aa19f0675e486672b6a77811b6a1",
"status": "affected",
"version": "7b15f1fc16f159da0478aa6be909e38f1e957833",
"versionType": "git"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "MDL (https://heartbreak.ing)"
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 9.4,
"baseSeverity": "CRITICAL",
"vectorString": "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",
"version": "4.0"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-390",
"description": "CWE-390 Detection of Error Condition Without Action",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "CWE-863 Incorrect Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-02T00:57:55.648Z",
"orgId": "4ac701fe-44e9-4bcd-9585-dd6449257611",
"shortName": "Bugcrowd"
},
"references": [
{
"name": "[cpp] restore strict validation of MLS welcome state",
"tags": [
"patch"
],
"url": "https://github.com/discord/libdave/commit/9686fbaea864aa19f0675e486672b6a77811b6a1"
},
{
"name": "libdave v1.2.0 release notes",
"tags": [
"release-notes"
],
"url": "https://github.com/discord/libdave/releases/tag/v1.2.0/cpp"
},
{
"name": "Discord Audio and Video End-to-End Encryption (DAVE) Protocol Whitepaper",
"tags": [
"technical-description"
],
"url": "https://daveprotocol.com/"
},
{
"tags": [
"product"
],
"url": "https://github.com/discord/libdave"
}
],
"title": "Improper MLS Welcome roster validation in Discord libdave allows unauthorized group membership",
"x_generator": {
"engine": "cvelib 1.8.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "4ac701fe-44e9-4bcd-9585-dd6449257611",
"assignerShortName": "Bugcrowd",
"cveId": "CVE-2026-104480",
"datePublished": "2026-10-02T00:57:55.648Z",
"dateReserved": "2026-10-02T00:57:11.860Z",
"dateUpdated": "2026-10-02T18:18:52.157Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-104480 (GCVE-0-2026-104480)
Vulnerability from cvelistv5 – Published: 2026-10-02 00:57 – Updated: 2026-10-02 18:18
VLAI
EPSS
VEX
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
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 18:18 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/discord/libdave/commit/9686fba… | patch |
| https://github.com/discord/libdave/releases/tag/v… | release-notes |
| https://daveprotocol.com/ | technical-description |
| https://github.com/discord/libdave | product |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-104480",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-02T18:18:39.777597Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-02T18:18:52.157Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://github.com",
"defaultStatus": "unaffected",
"modules": [
"C++ library"
],
"packageName": "discord/libdave",
"product": "libdave",
"programFiles": [
"cpp/src/mls/session.cpp"
],
"programRoutines": [
{
"name": "discord::dave::mls::Session::VerifyWelcomeState"
}
],
"repo": "https://github.com/discord/libdave",
"vendor": "Discord",
"versions": [
{
"lessThan": "1.2.0",
"status": "affected",
"version": "1.1.0",
"versionType": "semver"
},
{
"lessThan": "9686fbaea864aa19f0675e486672b6a77811b6a1",
"status": "affected",
"version": "7b15f1fc16f159da0478aa6be909e38f1e957833",
"versionType": "git"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "MDL (https://heartbreak.ing)"
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 9.4,
"baseSeverity": "CRITICAL",
"vectorString": "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",
"version": "4.0"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-390",
"description": "CWE-390 Detection of Error Condition Without Action",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "CWE-863 Incorrect Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-02T00:57:55.648Z",
"orgId": "4ac701fe-44e9-4bcd-9585-dd6449257611",
"shortName": "Bugcrowd"
},
"references": [
{
"name": "[cpp] restore strict validation of MLS welcome state",
"tags": [
"patch"
],
"url": "https://github.com/discord/libdave/commit/9686fbaea864aa19f0675e486672b6a77811b6a1"
},
{
"name": "libdave v1.2.0 release notes",
"tags": [
"release-notes"
],
"url": "https://github.com/discord/libdave/releases/tag/v1.2.0/cpp"
},
{
"name": "Discord Audio and Video End-to-End Encryption (DAVE) Protocol Whitepaper",
"tags": [
"technical-description"
],
"url": "https://daveprotocol.com/"
},
{
"tags": [
"product"
],
"url": "https://github.com/discord/libdave"
}
],
"title": "Improper MLS Welcome roster validation in Discord libdave allows unauthorized group membership",
"x_generator": {
"engine": "cvelib 1.8.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "4ac701fe-44e9-4bcd-9585-dd6449257611",
"assignerShortName": "Bugcrowd",
"cveId": "CVE-2026-104480",
"datePublished": "2026-10-02T00:57:55.648Z",
"dateReserved": "2026-10-02T00:57:11.860Z",
"dateUpdated": "2026-10-02T18:18:52.157Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}