{"id":"CVE-2026-59818","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-59818","generatedAt":"2026-10-28T09:41:40.342Z","title":"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…","description":"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-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.","published":"2026-07-08T21:16:55.000Z","lastModified":"2026-10-25T17:10:00.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-295"],"affected":["etcd/etcd"],"epss":{"score":0.0043,"percentile":0.37063,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1bef","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267f","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbb","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/pull/22007","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/pull/22021","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/pull/22025","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.5.32","tags":["Product","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.6.13","tags":["Product","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/security/advisories/GHSA-3wh4-j44w-pg92","tags":["Mitigation","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-59818","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}