CVE-2026-59818

MEDIUM6.5

etcd: gRPC client listener does not enforce `--client-crl-file` certificate revocation

Published Jul 8, 2026

Modified 1 months ago

Details

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.

References

WEB

https://github.com/etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1bef

WEB

https://github.com/etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267f

WEB

https://github.com/etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbb

WEB

https://github.com/etcd-io/etcd/pull/22007

WEB

https://github.com/etcd-io/etcd/pull/22021

WEB