{"id":"CVE-2026-59818","title":"etcd is a distributed key-value store for the data of a distributed system","summary":"etcd is a distributed key-value store for the data of a distributed system. Prior to 3.5.32 and 3.6.13, when etcd is configured with --listen-client-http-urls to split HTTP and gRPC client endpoints onto separate listeners, the --client-…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-295"],"vendor":"etcd","product":"etcd","affected":["etcd < 3.5.32","etcd >= 3.6.0, < 3.6.13"],"patched":["etcd 3.6.13"],"published":"2026-07-08","updated":"2026-07-13","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-59818","references":[{"url":"https://github.com/etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1bef","label":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267f","label":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbb","label":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/pull/22007","label":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/pull/22021","label":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/pull/22025","label":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.5.32","label":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.6.13","label":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/security/advisories/GHSA-3wh4-j44w-pg92","label":"security-advisories@github.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59818.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-59818"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2498305"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-59818"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59818"},{"url":"https://access.redhat.com/errata/RHSA-2026:44868"}],"tags":["nvd","csaf","vex","red-hat"],"epss":0.0043,"epssPercentile":0.36822,"ingestedAt":"2026-07-13T15:27:34.375Z","slug":"CVE-2026-59818","body":"## Overview\n\netcd is a distributed key-value store for the data of a distributed system. Prior to 3.5.32 and 3.6.13, when etcd is configured with --listen-client-http-urls to split HTTP and gRPC client endpoints onto separate listeners, the --client-crl-file Certificate Revocation List is not enforced on the gRPC listener, allowing a client with a revoked certificate to authenticate successfully over gRPC. This issue is fixed in versions 3.5.32 and 3.6.13.\n\n## Affected\n\n- `etcd < 3.5.32`\n- `etcd >= 3.6.0, < 3.6.13`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `etcd 3.6.13`\n\n## Vendor advisories\n\n- **RHSA-2026:44868** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-07-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:44868)\n- **Red Hat VEX** · Moderate · affected: Red Hat OpenStack Platform 16.2, Red Hat OpenStack Platform 17.1 · no fix planned: Red Hat OpenStack Platform 16.2, Red Hat OpenStack Platform 17.1 · updated 2026-09-08 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59818.json)","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}