High
etcd — security advisory
etcd is a distributed key-value store for the data of a distributed system. Prior to 3.5.32 and 3.6.13, when etcd is configured with --listen-client-http-urls to split HTTP and gRPC client endpoints onto separate listeners, the --client-crl-file Certificate Revocation List is not enforced on the gRPC listener, allowing a client with a revoked certificate to authenticate successfully over gRPC. This issue is fixed in versions 3.5.32 and 3.6.13.
- Products
- etcd
- Affected versions
- 3.5.16-10, 3.5.16-11, 3.5.16-4, 3.5.16-5, 3.5.16-6, 3.5.16-7, 3.5.16-8, 3.5.16-9, 3.5.22-1, 3.5.22-2, 3.5.30-1~exp1, 3.5.30-1~exp2, 3.5.30-2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-59818
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:18 UTC · Revision 2
Source evidence
etcd is a distributed key-value store for the data of a distributed system. Prior to 3.5.32 and 3.6.13, when etcd is configured with --listen-client-http-urls to split HTTP and gRPC client endpoints onto separate listeners, the --client-crl-file Certificate Revocation List is not enforced on the gRPC listener, allowing a client with a revoked certificate to authenticate successfully over gRPC. This issue is fixed in versions 3.5.32 and 3.6.13.
osv:DEBIAN-CVE-2026-59818
etcd
Fixed versions: Not specified
etcd
Fixed versions: Not specified
Complete source record
{
"id": "f659acbeaf4392d45af98b23361144531ef83973109e6f991c57545b67c3ce2f",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-59818",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-59818",
"summary": "etcd is a distributed key-value store for the data of a distributed system. Prior to 3.5.32 and 3.6.13, when etcd is configured with --listen-client-http-urls to split HTTP and gRPC client endpoints onto separate listeners, the --client-crl-file Certificate Revocation List is not enforced on the gRPC listener, allowing a client with a revoked certificate to authenticate successfully over gRPC. This issue is fixed in versions 3.5.32 and 3.6.13.",
"evidence": "osv:DEBIAN-CVE-2026-59818",
"products": [
{
"name": {
"value": "etcd",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.5.16-10",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.16-11",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.16-4",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.16-5",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.16-6",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.16-7",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.16-8",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.16-9",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.22-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.22-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.30-1~exp1",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.30-1~exp2",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.30-2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "etcd",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.5.16-10",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.16-11",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.16-4",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.16-5",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.16-6",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.16-7",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.16-8",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.16-9",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.22-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.22-2",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.30-1~exp1",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.30-1~exp2",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.30-2",
"evidence": "/affected/1/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-59818",
"aliases": [
"DEBIAN-CVE-2026-59818"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "etcd",
"purl": "pkg:deb/debian/etcd?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.5.16-10",
"3.5.16-11",
"3.5.16-4",
"3.5.16-5",
"3.5.16-6",
"3.5.16-7",
"3.5.16-8",
"3.5.16-9",
"3.5.22-1",
"3.5.22-2",
"3.5.30-1~exp1",
"3.5.30-1~exp2",
"3.5.30-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59818.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "etcd",
"purl": "pkg:deb/debian/etcd?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.5.16-10",
"3.5.16-11",
"3.5.16-4",
"3.5.16-5",
"3.5.16-6",
"3.5.16-7",
"3.5.16-8",
"3.5.16-9",
"3.5.22-1",
"3.5.22-2",
"3.5.30-1~exp1",
"3.5.30-1~exp2",
"3.5.30-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59818.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T11:47:32.733349662Z",
"provider": "osv",
"upstream": [
"CVE-2026-59818"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-59818"
]
},
"related_cves": [
{
"value": "CVE-2026-59818",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 450820,
"published_at": "2026-07-08T21:16:54.503+00:00"
}