CVE-2026-59818

MEDIUM

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

Title source: cna
STIX 2.1

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.

References (9)

Core 9
Core References
X_Refsource_Misc x_refsource_misc
https://github.com/etcd-io/etcd/pull/22007
X_Refsource_Misc x_refsource_misc
https://github.com/etcd-io/etcd/pull/22021
X_Refsource_Misc x_refsource_misc
https://github.com/etcd-io/etcd/pull/22025
X_Refsource_Misc x_refsource_misc
https://github.com/etcd-io/etcd/releases/tag/v3.5.32
X_Refsource_Misc x_refsource_misc
https://github.com/etcd-io/etcd/releases/tag/v3.6.13

Scores

CVSS v3 6.5
EPSS 0.0032
EPSS Percentile 24.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-295
Status published
Products (3)
etcd/etcd < 3.5.32
etcd-io/etcd < 3.5.32
etcd-io/etcd >= 3.6.0-alpha.0, < 3.6.13
Published Jul 08, 2026
Tracked Since Jul 09, 2026