CVE-2026-59818: medium-severity vulnerability in etcd-io etcd
etcd: gRPC client listener does not enforce `--client-crl-file` certificate revocation
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.4%
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Affected products
etcd-io · etcdRelated CVEs — etcd-io etcd
In the same product, most dangerous first.
CVE-2020-15136MEDIUMImproper authentication in etcdEPSS 1.7%CVE-2020-15115MEDIUMNo minimum password length in etcdEPSS 1.3%CVE-2020-15112MEDIUMImproper Input Validation in etcdEPSS 1.3%CVE-2020-15106MEDIUMImproper Input Validation in etcdEPSS 1.3%CVE-2020-15114HIGHDenial of Service in etcdEPSS 1.1%CVE-2023-32082LOWetcd key name can be accessed via LeaseTimeToLive APIEPSS 0.7%
References
https://github.com/etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1befhttps://github.com/etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267fhttps://github.com/etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbbhttps://github.com/etcd-io/etcd/pull/22007https://github.com/etcd-io/etcd/pull/22021https://github.com/etcd-io/etcd/pull/22025https://github.com/etcd-io/etcd/releases/tag/v3.5.32https://github.com/etcd-io/etcd/releases/tag/v3.6.13https://github.com/etcd-io/etcd/security/advisories/GHSA-3wh4-j44w-pg92