CVE-2026-59818
etcd: gRPC client listener does not enforce `--client-crl-file` certificate revocation
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-295 |
| Vendor | etcd-io |
| Product | etcd |
| Published | Jul 8, 2026 |
| Last Updated | Jul 9, 2026 |
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CVSS v3 Breakdown
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
High
Integrity
High
Availability
None
Affected Versions
etcd-io / etcd
>= 3.6.0-alpha.0, < 3.6.13 < 3.5.32
References
github.com: https://github.com/etcd-io/etcd/security/advisories/GHSA-3wh4-j44w-pg92 github.com: https://github.com/etcd-io/etcd/pull/22007 github.com: https://github.com/etcd-io/etcd/pull/22021 github.com: https://github.com/etcd-io/etcd/pull/22025 github.com: https://github.com/etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1bef github.com: https://github.com/etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267f github.com: https://github.com/etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbb github.com: https://github.com/etcd-io/etcd/releases/tag/v3.5.32 github.com: https://github.com/etcd-io/etcd/releases/tag/v3.6.13