{"api_version":"1","generated_at":"2026-08-13T03:48:06+00:00","cve":"CVE-2026-73499","urls":{"html":"https://cve.report/CVE-2026-73499","api":"https://cve.report/api/cve/CVE-2026-73499.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-73499","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-73499"},"summary":{"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":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-08-12 22:17:17","updated_at":"2026-08-12 22:17:17"},"problem_types":["CWE-863","CWE-863 CWE-863: Incorrect 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73499","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"etcd-io","product":"etcd","version":"affected < 3.5.33","platforms":[]},{"source":"CNA","vendor":"etcd-io","product":"etcd","version":"affected >= 3.6.0, < 3.6.14","platforms":[]},{"source":"CNA","vendor":"etcd-io","product":"etcd","version":"affected >= 3.7.0-alpha.0, < 3.7.1","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"etcd","vendor":"etcd-io","versions":[{"status":"affected","version":"< 3.5.33"},{"status":"affected","version":">= 3.6.0, < 3.6.14"},{"status":"affected","version":">= 3.7.0-alpha.0, < 3.7.1"}]}],"descriptions":[{"lang":"en","value":"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."}],"metrics":[{"cvssV4_0":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.1,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-12T21:20:31.888Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/etcd-io/etcd/security/advisories/GHSA-xg4h-6gfc-h4m8","tags":["x_refsource_CONFIRM"],"url":"https://github.com/etcd-io/etcd/security/advisories/GHSA-xg4h-6gfc-h4m8"},{"name":"https://github.com/etcd-io/etcd/commit/6643f80602461a6095c9b294b6512fd9719bef41","tags":["x_refsource_MISC"],"url":"https://github.com/etcd-io/etcd/commit/6643f80602461a6095c9b294b6512fd9719bef41"},{"name":"https://github.com/etcd-io/etcd/commit/7cf71ec9e2ec54230a5454392fa4ffd4574b41ed","tags":["x_refsource_MISC"],"url":"https://github.com/etcd-io/etcd/commit/7cf71ec9e2ec54230a5454392fa4ffd4574b41ed"},{"name":"https://github.com/etcd-io/etcd/commit/afeaa624da19085b47fb5ccc7c22a8c421bc2eae","tags":["x_refsource_MISC"],"url":"https://github.com/etcd-io/etcd/commit/afeaa624da19085b47fb5ccc7c22a8c421bc2eae"},{"name":"https://github.com/etcd-io/etcd/commit/e863b001bbf3367003a543aa3099db9892134cd7","tags":["x_refsource_MISC"],"url":"https://github.com/etcd-io/etcd/commit/e863b001bbf3367003a543aa3099db9892134cd7"},{"name":"https://github.com/etcd-io/etcd/releases/tag/v3.5.33","tags":["x_refsource_MISC"],"url":"https://github.com/etcd-io/etcd/releases/tag/v3.5.33"},{"name":"https://github.com/etcd-io/etcd/releases/tag/v3.6.14","tags":["x_refsource_MISC"],"url":"https://github.com/etcd-io/etcd/releases/tag/v3.6.14"},{"name":"https://github.com/etcd-io/etcd/releases/tag/v3.7.1","tags":["x_refsource_MISC"],"url":"https://github.com/etcd-io/etcd/releases/tag/v3.7.1"}],"source":{"advisory":"GHSA-xg4h-6gfc-h4m8","discovery":"UNKNOWN"},"title":"etcd: Watch API authorization bypass via open-ended range requests"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-73499","datePublished":"2026-08-12T21:20:31.888Z","dateReserved":"2026-08-12T19:00:33.736Z","dateUpdated":"2026-08-12T21:20:31.888Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-12 22:17:17","lastModifiedDate":"2026-08-12 22:17:17","problem_types":["CWE-863","CWE-863 CWE-863: Incorrect Authorization"],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"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","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"73499","Ordinal":"1","Title":"etcd: Watch API authorization bypass via open-ended range reques","CVE":"CVE-2026-73499","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"73499","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"etcd: Watch API authorization bypass via open-ended range reques"}]}}}