vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-59818

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

HIGH
8.1
CVSS Score
Published: July 8, 2026 at 09:00 PM UTC
Updated: October 25, 2026 at 05:10 PM UTC
2 products affected across 2 vendorsEtcd:Etcd

Using etcd by etcd-io?

Get instant alerts when new vulnerabilities affect etcd - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH8.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Etcd:· Etcd
95%
v < 3.5.323.6.0 ≤ v < 3.6.13
Affected range stops below 3.5.32, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.6.13, so it looks safe — our inference, not a vendor statement
Etcd· Etcd Io
90%
v < 3.5.32
Affected range stops below 3.5.32, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.6.13, so it looks safe — our inference, not a vendor statement

References (9)

x_refsource_CONFIRMMitigationVendor Advisory
Source: cverecord
https://github.com/etcd-io/etcd/security/advisories/GHSA-3wh4-j44w-pg92
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/etcd-io/etcd/pull/22007
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/etcd-io/etcd/pull/22021
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/etcd-io/etcd/pull/22025
x_refsource_MISCPatch
Source: cverecord
https://github.com/etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1bef
x_refsource_MISCPatch
Source: cverecord
https://github.com/etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267f
x_refsource_MISCPatch
Source: cverecord
https://github.com/etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbb
x_refsource_MISCProductRelease Notes
Source: cverecord
https://github.com/etcd-io/etcd/releases/tag/v3.5.32

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-295

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card