{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.5.33"
              },
              {
                "introduced": "3.6.0"
              },
              {
                "fixed": "3.6.14"
              },
              {
                "introduced": "3.7.0-alpha.0"
              },
              {
                "fixed": "3.7.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "introduced": "f5d605a93abe2fdfa13880aab0f1f3a4203628dd"
            },
            {
              "introduced": "f19aca68580f74f27ed371d0e09e9ef6b1b2b93d"
            },
            {
              "fixed": "9f4b125405c7fbd92e2c9cbb5235feffe1904a1d"
            },
            {
              "fixed": "fc04cf702b0a46c2fd85547a2be05705b100a496"
            },
            {
              "fixed": "5e7fd0de9a57db03ecc11794dc40403a734c07bb"
            },
            {
              "fixed": "6643f80602461a6095c9b294b6512fd9719bef41"
            },
            {
              "fixed": "7cf71ec9e2ec54230a5454392fa4ffd4574b41ed"
            },
            {
              "fixed": "afeaa624da19085b47fb5ccc7c22a8c421bc2eae"
            },
            {
              "fixed": "e863b001bbf3367003a543aa3099db9892134cd7"
            }
          ],
          "repo": "https://github.com/etcd-io/etcd",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-xg4h-6gfc-h4m8"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73499.json"
  },
  "details": "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.",
  "id": "CVE-2026-73499",
  "modified": "2026-08-16T03:31:19.595362699Z",
  "published": "2026-08-12T21:20:31.888Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/etcd-io/etcd/releases/tag/v3.5.33"
    },
    {
      "type": "WEB",
      "url": "https://github.com/etcd-io/etcd/releases/tag/v3.6.14"
    },
    {
      "type": "WEB",
      "url": "https://github.com/etcd-io/etcd/releases/tag/v3.7.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73499.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/etcd-io/etcd/security/advisories/GHSA-xg4h-6gfc-h4m8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73499"
    },
    {
      "type": "FIX",
      "url": "https://github.com/etcd-io/etcd/commit/6643f80602461a6095c9b294b6512fd9719bef41"
    },
    {
      "type": "FIX",
      "url": "https://github.com/etcd-io/etcd/commit/7cf71ec9e2ec54230a5454392fa4ffd4574b41ed"
    },
    {
      "type": "FIX",
      "url": "https://github.com/etcd-io/etcd/commit/afeaa624da19085b47fb5ccc7c22a8c421bc2eae"
    },
    {
      "type": "FIX",
      "url": "https://github.com/etcd-io/etcd/commit/e863b001bbf3367003a543aa3099db9892134cd7"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "etcd: Watch API authorization bypass via open-ended range requests"
}