{"id":"CVE-2026-73499","revision":"3378a0da490b47f6927ad5845cb4d76b","records":[{"revision":"3378a0da490b47f6927ad5845cb4d76b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-73499","aliases":[],"title":"etcd: Watch API authorization bypass via open-ended range requests","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.","state":0,"publishedAt":"2026-08-12T21:20:31.888+00:00","modifiedAt":"2026-08-14T22:19:59.624+00:00","affected":[{"ecosystem":"Vendor product","name":"etcd","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"etcd-io\",\n                    \"product\": \"etcd\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 3.5.33\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 3.6.0, < 3.6.14\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 3.7.0-alpha.0, < 3.7.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":7.1,"severity":"HIGH"}],"references":["https://github.com/etcd-io/etcd/security/advisories/GHSA-xg4h-6gfc-h4m8","https://github.com/etcd-io/etcd/commit/6643f80602461a6095c9b294b6512fd9719bef41","https://github.com/etcd-io/etcd/commit/7cf71ec9e2ec54230a5454392fa4ffd4574b41ed","https://github.com/etcd-io/etcd/commit/afeaa624da19085b47fb5ccc7c22a8c421bc2eae","https://github.com/etcd-io/etcd/commit/e863b001bbf3367003a543aa3099db9892134cd7","https://github.com/etcd-io/etcd/releases/tag/v3.5.33","https://github.com/etcd-io/etcd/releases/tag/v3.6.14","https://github.com/etcd-io/etcd/releases/tag/v3.7.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-73499","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-73499","identifiers":["CVE-2026-73499"]},"retained":false,"historicalAffected":[]}],"coverage":[]}