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

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Summary

CVECVE-2026-59818
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-08 21:16:54 UTC
Updated2026-07-08 21:16:54 UTC
Descriptionetcd 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.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

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

Problem Types: CWE-295 | CWE-295 CWE-295: Improper Certificate Validation

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
3.1CNADECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Etcd-io Etcd affected >= 3.6.0-alpha.0, < 3.6.13 Not specified
CNA Etcd-io Etcd affected < 3.5.32 Not specified

References

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