CVE-2026-59818
etcd: gRPC client listener does not enforce `--client-crl-file` certificate revocation
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Timeline
ID reserved
By GitHub_M
- 1 day later
· 1 day later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Analyzed | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.43% · top 63% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
Affected products
References (9)
- https://github.com/etcd-io/etcd/security/advisories/GHSA-3wh4-j44w-pg92 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/etcd-io/etcd/pull/22007 (opens in a new tab)x_refsource_MISC
- https://github.com/etcd-io/etcd/pull/22021 (opens in a new tab)x_refsource_MISC
- https://github.com/etcd-io/etcd/pull/22025 (opens in a new tab)x_refsource_MISC
- https://github.com/etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1bef (opens in a new tab)x_refsource_MISC
- https://github.com/etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267f (opens in a new tab)x_refsource_MISC
- https://github.com/etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbb (opens in a new tab)x_refsource_MISC
- https://github.com/etcd-io/etcd/releases/tag/v3.5.32 (opens in a new tab)x_refsource_MISC
- https://github.com/etcd-io/etcd/releases/tag/v3.6.13 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-59818)Record last updated .