{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.4.44"
              },
              {
                "introduced": "3.5.0"
              },
              {
                "fixed": "3.5.30"
              },
              {
                "introduced": "3.6.0"
              },
              {
                "fixed": "3.6.11"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "59098950c8e467cdf3cf234b56b57449fec1a507"
            },
            {
              "introduced": "946a5a6f25c3b6b89408ab447852731bde6e6289"
            },
            {
              "fixed": "7d20602453b3a5ad9eda401510ea53522c611ee3"
            },
            {
              "introduced": "f5d605a93abe2fdfa13880aab0f1f3a4203628dd"
            },
            {
              "fixed": "ec166e2292a58365c90e96fcd206b3b74938d49d"
            }
          ],
          "repo": "https://github.com/etcd-io/etcd",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-x35m-3gp4-4fh5"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44283.json"
  },
  "details": "etcd is a distributed key-value store for the data of a distributed system. Prior to 3.4.44, 3.5.30, and 3.6.11, a vulnerability in etcd allows read access via PrevKv, or lease attachment in Put requests within transaction operations, to bypass RBAC authorization checks. An authenticated user without sufficient read or lease-related permissions may be able to access unauthorized data or attach leases by invoking transaction operations with these features enabled. This vulnerability is fixed in 3.4.44, 3.5.30, and 3.6.11.",
  "id": "CVE-2026-44283",
  "modified": "2026-07-15T01:48:52.499276242Z",
  "published": "2026-05-14T17:01:33.598Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44283.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/etcd-io/etcd/security/advisories/GHSA-x35m-3gp4-4fh5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44283"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks"
}