High
etcd — security advisory
etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.5.33, 3.6.14, and 3.7.1, a user granted READ permission on a single exact key can use the Watch gRPC API with clientv3.WithFromKey() to receive watch events for every key lexicographically greater than or equal to the permitted key. In server/etcdserver/api/v3rpc/watch.go, the open-ended RangeEnd sentinel is rewritten before the RBAC permission check in server/auth/range_perm_cache.go function isRangeOpPermitted, causing the request to be treated as an exact-key watch. Range/Get and DeleteRange requests are not affected, and the issue affects only clusters with authentication enabled. This issue is fixed in versions 3.5.33, 3.6.14, and 3.7.1.
- Products
- etcd
- Affected versions
- 3.4.23-4, 3.4.23-5, 3.4.23-6, 3.4.30-1, 3.4.30-2, 3.4.30-3, 3.5.15-1, 3.5.15-2, 3.5.15-3, 3.5.15-4, 3.5.15-5, 3.5.15-6, 3.5.15-7, 3.5.16-1, 3.5.16-10, 3.5.16-11, 3.5.16-2, 3.5.16-3, 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, 3.5.5-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-73499
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:57 UTC · Revision 1
Source evidence
etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.5.33, 3.6.14, and 3.7.1, a user granted READ permission on a single exact key can use the Watch gRPC API with clientv3.WithFromKey() to receive watch events for every key lexicographically greater than or equal to the permitted key. In server/etcdserver/api/v3rpc/watch.go, the open-ended RangeEnd sentinel is rewritten before the RBAC permission check in server/auth/range_perm_cache.go function isRangeOpPermitted, causing the request to be treated as an exact-key watch. Range/Get and DeleteRange requests are not affected, and the issue affects only clusters with authentication enabled. This issue is fixed in versions 3.5.33, 3.6.14, and 3.7.1.
osv:DEBIAN-CVE-2026-73499
etcd
Fixed versions: Not specified
etcd
Fixed versions: Not specified
etcd
Fixed versions: Not specified
Complete source record
{
"id": "8940bd5c2fcd7f86d3b7e9a9e989eff816e0576c0b5e225a8a7d7aaa93abfbbb",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-73499",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-73499",
"summary": "etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.5.33, 3.6.14, and 3.7.1, a user granted READ permission on a single exact key can use the Watch gRPC API with clientv3.WithFromKey() to receive watch events for every key lexicographically greater than or equal to the permitted key. In server/etcdserver/api/v3rpc/watch.go, the open-ended RangeEnd sentinel is rewritten before the RBAC permission check in server/auth/range_perm_cache.go function isRangeOpPermitted, causing the request to be treated as an exact-key watch. Range/Get and DeleteRange requests are not affected, and the issue affects only clusters with authentication enabled. This issue is fixed in versions 3.5.33, 3.6.14, and 3.7.1.",
"evidence": "osv:DEBIAN-CVE-2026-73499",
"products": [
{
"name": {
"value": "etcd",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.4.23-4",
"evidence": "/affected/0/versions"
},
{
"value": "3.4.23-5",
"evidence": "/affected/0/versions"
},
{
"value": "3.4.23-6",
"evidence": "/affected/0/versions"
},
{
"value": "3.4.30-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.4.30-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.4.30-3",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.15-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.15-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.15-3",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.15-4",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.15-5",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.15-6",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.15-7",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.16-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.16-10",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.16-11",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.16-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.16-3",
"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"
},
{
"value": "3.5.5-1",
"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"
}
]
},
{
"name": {
"value": "etcd",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.5.16-10",
"evidence": "/affected/2/versions"
},
{
"value": "3.5.16-11",
"evidence": "/affected/2/versions"
},
{
"value": "3.5.16-4",
"evidence": "/affected/2/versions"
},
{
"value": "3.5.16-5",
"evidence": "/affected/2/versions"
},
{
"value": "3.5.16-6",
"evidence": "/affected/2/versions"
},
{
"value": "3.5.16-7",
"evidence": "/affected/2/versions"
},
{
"value": "3.5.16-8",
"evidence": "/affected/2/versions"
},
{
"value": "3.5.16-9",
"evidence": "/affected/2/versions"
},
{
"value": "3.5.22-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.5.22-2",
"evidence": "/affected/2/versions"
},
{
"value": "3.5.30-1~exp1",
"evidence": "/affected/2/versions"
},
{
"value": "3.5.30-1~exp2",
"evidence": "/affected/2/versions"
},
{
"value": "3.5.30-2",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-73499",
"aliases": [
"DEBIAN-CVE-2026-73499"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/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": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "etcd",
"purl": "pkg:deb/debian/etcd?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"3.4.23-4",
"3.4.23-5",
"3.4.23-6",
"3.4.30-1",
"3.4.30-2",
"3.4.30-3",
"3.5.15-1",
"3.5.15-2",
"3.5.15-3",
"3.5.15-4",
"3.5.15-5",
"3.5.15-6",
"3.5.15-7",
"3.5.16-1",
"3.5.16-10",
"3.5.16-11",
"3.5.16-2",
"3.5.16-3",
"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",
"3.5.5-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73499.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"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-2026-73499.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-2026-73499.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-25T09:47:42.504393340Z",
"provider": "osv",
"upstream": [
"CVE-2026-73499"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-73499"
]
},
"related_cves": [
{
"value": "CVE-2026-73499",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 445408,
"published_at": "2026-08-12T22:17:17.13+00:00"
}