{"id":"CVE-2026-44283","state":"PUBLISHED","title":"etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks","description":"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.","publishedAt":"2026-05-14T17:01:33.598Z","updatedAt":"2026-05-16T00:40:51.007Z","severity":{"score":0,"label":"None","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["etcd-io etcd"],"affected":[{"vendor":"etcd-io","product":"etcd","versions":[{"version":"< 3.4.44","status":"affected"},{"version":">= 3.5.0, <= 3.5.29","status":"affected"},{"version":">= 3.6.0, <= 3.6.10","status":"affected"}]}],"references":["https://github.com/etcd-io/etcd/security/advisories/GHSA-x35m-3gp4-4fh5"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44283.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44283","state":"PUBLISHED","datePublished":"2026-05-14T17:01:33.598Z","dateUpdated":"2026-05-16T00:40:51.007Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-05T17:39:31.112Z"},"containers":{"cna":{"title":"etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"etcd-io","product":"etcd","versions":[{"version":"< 3.4.44","status":"affected"},{"version":">= 3.5.0, <= 3.5.29","status":"affected"},{"version":">= 3.6.0, <= 3.6.10","status":"affected"}]}],"references":[{"url":"https://github.com/etcd-io/etcd/security/advisories/GHSA-x35m-3gp4-4fh5","name":"https://github.com/etcd-io/etcd/security/advisories/GHSA-x35m-3gp4-4fh5","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":0,"baseSeverity":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-14T17:01:33.598Z"},"source":{"advisory":"GHSA-x35m-3gp4-4fh5","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-16T00:40:39.014184Z","id":"CVE-2026-44283","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-16T00:40:51.007Z"}}]}}}