CVE-2026-59818 | etcd is a distributed key-value store for the data of a dist… | CVSS 6.5 MEDIUM

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.

Metadata

CVE ID: CVE-2026-59818
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-07-07 15:00 UTC
Published: 2026-07-08 21:00 UTC
Last updated: 2026-07-08 21:00 UTC
Primary CWE: CWE-295
CWE-295: Improper Certificate Validation
Vendor / Product: etcd-io / etcd
Sources: cve.org · NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Affected products (1)

Vendor	Product	Platform	Versions
etcd-io	etcd	—	>= 3.6.0-alpha.0, < 3.6.13, < 3.5.32

Weakness (CWE)

CWE	Source	Description
CWE-295	cna	CWE-295: Improper Certificate Validation

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.5	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

References (9)

https://github.com/etcd-io/etcd/security/advisories/GHSA-3wh4-j44w-pg92 https://github.com/etcd-io/etcd/security/advisories/GHSA-3wh4-j44w-pg92
https://github.com/etcd-io/etcd/pull/22007 https://github.com/etcd-io/etcd/pull/22007
https://github.com/etcd-io/etcd/pull/22021 https://github.com/etcd-io/etcd/pull/22021
https://github.com/etcd-io/etcd/pull/22025 https://github.com/etcd-io/etcd/pull/22025
https://github.com/etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1bef https://github.com/etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1bef
https://github.com/etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267f https://github.com/etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267f
https://github.com/etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbb https://github.com/etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbb
https://github.com/etcd-io/etcd/releases/tag/v3.5.32 https://github.com/etcd-io/etcd/releases/tag/v3.5.32
https://github.com/etcd-io/etcd/releases/tag/v3.6.13 https://github.com/etcd-io/etcd/releases/tag/v3.6.13