{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-44283", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-05T17:39:31.112Z", "datePublished": "2026-05-14T17:01:33.598Z", "dateUpdated": "2026-05-14T17:01:33.598Z"}, "containers": {"cna": {"title": "etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks", "problemTypes": [{"descriptions": [{"cweId": "CWE-863", "lang": "en", "description": "CWE-863: Incorrect Authorization", "type": "CWE"}]}], "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"}}], "references": [{"name": "https://github.com/etcd-io/etcd/security/advisories/GHSA-x35m-3gp4-4fh5", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/etcd-io/etcd/security/advisories/GHSA-x35m-3gp4-4fh5"}], "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"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-14T17:01:33.598Z"}, "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."}], "source": {"advisory": "GHSA-x35m-3gp4-4fh5", "discovery": "UNKNOWN"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*", "matchCriteriaId": "568DC65D-3E58-49DC-A24A-135CE065F1C3", "versionEndExcluding": "3.4.44", "vulnerable": true}, {"criteria": "cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*", "matchCriteriaId": "9BA51104-9E69-42B7-98BB-44932C0143B2", "versionEndExcluding": "3.5.30", "versionStartIncluding": "3.5.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*", "matchCriteriaId": "81E4F5D2-8C2D-4206-9C96-11C79E0FAC06", "versionEndExcluding": "3.6.11", "versionStartIncluding": "3.6.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}], "id": "CVE-2026-44283", "lastModified": "2026-05-15T18:24:59.527", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 0.0, "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"}, "exploitabilityScore": 3.9, "impactScore": 0.0, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-05-14T18:16:49.650", "references": [{"source": "security-advisories@github.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://github.com/etcd-io/etcd/security/advisories/GHSA-x35m-3gp4-4fh5"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-05-14T18:30:26.577845+00:00", "updated": "2026-05-14T18:30:26.577857+00:00", "vendors": []}