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CVE-2026-59818

34
FAUCET Score

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.

First published: Jul 8, 2026Last modified: Jul 8, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 3.5.32CPE matchmatch criteria
cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*
>= 3.6.0, < 3.6.13CPE matchmatch criteria
cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.32%
Probability of exploitation in next 30 days
EPSS Percentile
24.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0032 is in the 12th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: azl3 etcd 3.5.30-2 on Azure Linux 3.0Fixed in: 3.5.32-1

Vendor Advisories (1)

microsoft2026-Jul/CVE-2026-59818Moderate

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

Jul 2, 2026

References

github.com / etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1bef
Patch
github.com / etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267f
Patch
github.com / etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbb
Patch
github.com / etcd-io/etcd/pull/22007
Issue TrackingPatch
github.com / etcd-io/etcd/pull/22021
Issue TrackingPatch
github.com / etcd-io/etcd/pull/22025
Issue TrackingPatch
github.com / etcd-io/etcd/releases/tag/v3.5.32
ProductRelease Notes
github.com / etcd-io/etcd/releases/tag/v3.6.13
ProductRelease Notes
github.com / etcd-io/etcd/security/advisories/GHSA-3wh4-j44w-pg92
MitigationVendor Advisory