CVEvulnerability
CVE-2026-73499
7.1 HIGH
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-08-12
- Last modified
- 2026-10-24
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 7.1 HIGH — 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
- Weaknesses
- CWE-863
Description
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.
Related
Weakness · CWE (1)
- CWE-863 Incorrect Authorization weakness
References
- https://github.com/etcd-io/etcd/commit/6643f80602461a6095c9b294b6512fd9719bef41 github.com
- https://github.com/etcd-io/etcd/commit/7cf71ec9e2ec54230a5454392fa4ffd4574b41ed github.com
- https://github.com/etcd-io/etcd/commit/afeaa624da19085b47fb5ccc7c22a8c421bc2eae github.com
- https://github.com/etcd-io/etcd/commit/e863b001bbf3367003a543aa3099db9892134cd7 github.com
- https://github.com/etcd-io/etcd/releases/tag/v3.5.33 github.com
- https://github.com/etcd-io/etcd/releases/tag/v3.6.14 github.com
- https://github.com/etcd-io/etcd/releases/tag/v3.7.1 github.com
- https://github.com/etcd-io/etcd/security/advisories/GHSA-xg4h-6gfc-h4m8 github.com