{"action":"Upgrade go.etcd.io/etcd/v3 to 3.4.42 or later.","affected":[{"fixed":"3.4.42","introduced":"0"},{"fixed":"3.5.28","introduced":"3.5.0-alpha.0"},{"fixed":"3.6.9","introduced":"3.6.0-alpha.0"}],"component":"go.etcd.io/etcd/v3","cve_ids":["CVE-2026-33343"],"ecosystem":"Go","epss":0.00219,"exploited":false,"fixed_versions":["3.4.42","3.5.28","3.6.9"],"ghsa_id":"GHSA-rfx7-8w68-q57q","id":"tcs_01M5KGG7Q7Q3QZ49998GRABHCA","modified_at":"2026-04-10T08:29:31.267011739Z","published_at":"2026-04-07T14:58:41Z","references":["https://osv.dev/vulnerability/GO-2026-4808","https://github.com/etcd-io/etcd/security/advisories/GHSA-rfx7-8w68-q57q"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"GO-2026-4808#Go/go.etcd.io/etcd/v3","url":"https://osv.dev/vulnerability/GO-2026-4808"},{"source":"nvd","source_id":"CVE-2026-33343","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33343"}],"summary":"Nested etcd transactions bypass RBAC authorization checks in go.etcd.io/etcd"}