Medium
etcd: gRPC client listener does not enforce `--client-crl-file` certificate revocation
Type: advisorySources: OSV
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
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-59818
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 16:06 UTC · Revision 1
Source evidence
etcd: gRPC client listener does not enforce `--client-crl-file` certificate revocation
core-osv · Original sourcePublished 8 Jul 2026, 21:00 UTC
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:CVE-2026-59818
Complete source record
{
"id": "151a1ffd8c135a17ff00230c0a272e729db8ccb311db1699bf72028793ed906d",
"url": "https://osv.dev/vulnerability/CVE-2026-59818",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "etcd: gRPC client listener does not enforce `--client-crl-file` certificate revocation",
"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:CVE-2026-59818",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-59818",
"aliases": [
"BIT-etcd-2026-59818",
"CVE-2026-59818",
"GHSA-3wh4-j44w-pg92"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/etcd-io/etcd",
"type": "GIT",
"events": [
{
"introduced": "0"
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{
"fixed": "32c8992df2e62e8a99decde1e7abcb3cc40cb5e6"
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"database_specific": {
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{
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"source": "REFERENCES_TAG",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59818.json"
}
}
],
"modified": "2026-10-28T02:30:20.556450659Z",
"provider": "osv",
"references": [
"https://github.com/etcd-io/etcd/releases/tag/v3.5.32",
"https://github.com/etcd-io/etcd/releases/tag/v3.6.13",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59818.json",
"https://github.com/etcd-io/etcd/security/advisories/GHSA-3wh4-j44w-pg92",
"https://nvd.nist.gov/vuln/detail/CVE-2026-59818",
"https://github.com/etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1bef",
"https://github.com/etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267f",
"https://github.com/etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbb",
"https://github.com/etcd-io/etcd/pull/22007",
"https://github.com/etcd-io/etcd/pull/22021",
"https://github.com/etcd-io/etcd/pull/22025"
],
"provider_metadata": {
"cwe_ids": [
"CWE-295"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59818.json"
}
},
"related_cves": [
{
"value": "CVE-2026-59818",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 486937,
"published_at": "2026-07-08T21:00:18.207+00:00"
}