Medium 6.5Published Jul 8, 2026

CVE-2026-59818etcd: gRPC client listener does not enforce `--client-crl-file` certificate revocation

Updated under an hour ago (Oct 27, 2026, 6:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for etcd-io etcd

Exploited in the last 30 days

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: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-295
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jul 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

etcd-io etcd etcd_io:etcd (from the name)	from 3.6.0-alpha.0, < 3.6.13; before 3.5.32	CNA record
etcd etcd etcd:etcd	before 3.5.32; from 3.6.0 before 3.6.13	NVD

References

References

https://github.com/etcd-io/etcd/security/advisories/GHSA-3wh4-j44w-pg92	x-refsource-confirm, mitigation, vendor-advisory
https://github.com/etcd-io/etcd/pull/22007	x-refsource-misc, issue-tracking, patch
https://github.com/etcd-io/etcd/pull/22021	x-refsource-misc, issue-tracking, patch
https://github.com/etcd-io/etcd/pull/22025	x-refsource-misc, issue-tracking, patch
https://github.com/etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1bef	x-refsource-misc, patch
https://github.com/etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267f	x-refsource-misc, patch
https://github.com/etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbb	x-refsource-misc, patch
https://github.com/etcd-io/etcd/releases/tag/v3.5.32	x-refsource-misc, product, release-notes
https://github.com/etcd-io/etcd/releases/tag/v3.6.13	x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.