CVE-2026-59818

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 63% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

A fix is available — apply it.

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.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

July 8, 2026

Last Modified

July 13, 2026

Advisory Details (9)

Auto-updated Jul 8, 2026
Patch available. Sources: github_release, github, github_pr, github_commit.
github_release Patch Available

v3.6.13

Patch available: etcd-io/etcd v3.6.13

https://github.com/etcd-io/etcd/releases/tag/v3.6.13
github_release Patch Available

v3.5.32

Patch available: etcd-io/etcd v3.5.32

https://github.com/etcd-io/etcd/releases/tag/v3.5.32
github_commit

commit 8221ae82bc25 (etcd-io/etcd)

Fix landed in etcd-io/etcd commit 8221ae82bc25 — awaiting tagged release

https://github.com/etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbb
github_commit

commit 24838af5a53d (etcd-io/etcd)

Fix landed in etcd-io/etcd commit 24838af5a53d — awaiting tagged release

https://github.com/etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267f
github_commit

commit 2308ce157806 (etcd-io/etcd)

Fix landed in etcd-io/etcd commit 2308ce157806 — awaiting tagged release

https://github.com/etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1bef
github_pr

[release-3.6] Reject the client request if the client certificate has been revoked

Fix merged in etcd-io/etcd PR #22025 on 2026-07-01 — awaiting tagged release

https://github.com/etcd-io/etcd/pull/22025
github_pr

[release-3.5] Reject the client request if the client certificate has been revoked

Fix merged in etcd-io/etcd PR #22021 on 2026-07-01 — awaiting tagged release

https://github.com/etcd-io/etcd/pull/22021
github_pr

Reject the client request if the client certificate has been revoked

Fix merged in etcd-io/etcd PR #22007 on 2026-07-01 — awaiting tagged release

https://github.com/etcd-io/etcd/pull/22007
github Patch Available

etcd: CRL enforcement bypass on gRPC listener when `--listen-client-http-urls` is configured · Advisory · etcd-io/etcd · GitHub

https://github.com/etcd-io/etcd/security/advisories/GHSA-3wh4-j44w-pg92

Vendor Advisories for CVE-2026-59818(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatetcd-main-3.7.1-0.1.hum12026-07-24redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
etcd3.5.16-10 ... 3.5.30-2 (13 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
etcd3.5.16-10 ... 3.5.30-2 (13 versions)——

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 60× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 176 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 05:40 UTCEG score recompute
  3. 2026-09-18 05:40 UTCVendor advisory
  4. 2026-09-17 19:31 UTCEPSS rescore
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 05:15 UTCEPSS rescore
  7. 2026-09-15 03:11 UTCEPSS rescore
  8. 2026-09-13 23:48 UTCEG score recompute
  9. 2026-09-13 23:48 UTCVendor advisory
  10. 2026-09-13 16:47 UTCEPSS rescore
  11. 2026-09-13 08:22 UTCVendor advisory
  12. 2026-09-12 15:29 UTCEG score recompute
  13. 2026-09-12 15:29 UTCVendor advisory
  14. 2026-09-12 03:30 UTCEG score recompute
  15. 2026-09-12 03:30 UTCVendor advisory
  16. 2026-09-11 14:53 UTCEPSS rescore
  17. 2026-09-10 09:35 UTCEPSS rescore
  18. 2026-09-08 22:01 UTCEPSS rescore
  19. 2026-09-07 16:01 UTCEPSS rescore
  20. 2026-09-06 14:02 UTCEG score recompute
  21. 2026-09-06 14:02 UTCVendor advisory
  22. 2026-09-06 13:47 UTCEPSS rescore
  23. 2026-09-05 22:45 UTCEG score recompute
  24. 2026-09-05 22:45 UTCVendor advisory
  25. 2026-09-04 05:07 UTCEPSS rescore
Show 75 more
  1. 2026-09-02 14:12 UTCEPSS rescore
  2. 2026-09-01 13:54 UTCEPSS rescore
  3. 2026-09-01 04:40 UTCEPSS rescore
  4. 2026-08-30 19:27 UTCEG score recompute
  5. 2026-08-30 19:27 UTCVendor advisory
  6. 2026-08-30 19:17 UTCEPSS rescore
  7. 2026-08-30 07:28 UTCEG score recompute
  8. 2026-08-30 07:28 UTCVendor advisory
  9. 2026-08-30 01:22 UTCEPSS rescore
  10. 2026-08-28 21:42 UTCEPSS rescore
  11. 2026-08-27 21:48 UTCEG score recompute
  12. 2026-08-27 21:48 UTCVendor advisory
  13. 2026-08-27 14:25 UTCEPSS rescore
  14. 2026-08-27 01:21 UTCEG score recompute
  15. 2026-08-27 01:21 UTCVendor advisory
  16. 2026-08-26 14:46 UTCEPSS rescore
  17. 2026-08-26 04:45 UTCEG score recompute
  18. 2026-08-26 04:45 UTCVendor advisory
  19. 2026-08-25 13:49 UTCEPSS rescore
  20. 2026-08-25 10:09 UTCVendor advisory
  21. 2026-08-24 20:24 UTCEG score recompute
  22. 2026-08-24 20:24 UTCVendor advisory
  23. 2026-08-24 05:36 UTCVendor advisory
  24. 2026-08-23 17:36 UTCVendor advisory
  25. 2026-08-23 05:37 UTCEG score recompute
  26. 2026-08-23 05:37 UTCVendor advisory
  27. 2026-08-23 00:19 UTCEPSS rescore
  28. 2026-08-22 17:37 UTCVendor advisory
  29. 2026-08-22 04:44 UTCEG score recompute
  30. 2026-08-22 04:44 UTCVendor advisory
  31. 2026-08-21 23:49 UTCEPSS rescore
  32. 2026-08-21 03:57 UTCEG score recompute
  33. 2026-08-21 03:57 UTCVendor advisory
  34. 2026-08-20 22:55 UTCEPSS rescore
  35. 2026-08-20 15:22 UTCVendor advisory
  36. 2026-08-20 01:56 UTCEG score recompute
  37. 2026-08-19 17:04 UTCEPSS rescore
  38. 2026-08-19 10:52 UTCVendor advisory
  39. 2026-08-18 22:53 UTCEG score recompute
  40. 2026-08-18 22:53 UTCVendor advisory
  41. 2026-08-18 13:48 UTCEPSS rescore
  42. 2026-08-18 10:48 UTCVendor advisory
  43. 2026-08-17 22:21 UTCEG score recompute
  44. 2026-08-17 22:21 UTCVendor advisory
  45. 2026-08-17 13:47 UTCEPSS rescore
  46. 2026-08-17 06:05 UTCVendor advisory
  47. 2026-08-16 17:24 UTCEG score recompute
  48. 2026-08-16 17:24 UTCVendor advisory
  49. 2026-08-16 14:56 UTCEPSS rescore
  50. 2026-08-16 05:25 UTCEG score recompute
  51. 2026-08-16 05:25 UTCVendor advisory
  52. 2026-08-16 02:14 UTCEPSS rescore
  53. 2026-08-15 17:26 UTCVendor advisory
  54. 2026-08-15 05:26 UTCEG score recompute
  55. 2026-08-15 05:26 UTCVendor advisory
  56. 2026-08-15 01:30 UTCEPSS rescore
  57. 2026-08-14 17:26 UTCVendor advisory
  58. 2026-08-14 05:08 UTCEG score recompute
  59. 2026-08-14 05:08 UTCVendor advisory
  60. 2026-08-13 22:00 UTCEPSS rescore
  61. 2026-08-13 17:08 UTCVendor advisory
  62. 2026-08-12 16:46 UTCEG score recompute
  63. 2026-08-12 16:46 UTCVendor advisory
  64. 2026-08-12 13:51 UTCEPSS rescore
  65. 2026-08-12 04:47 UTCVendor advisory
  66. 2026-08-11 16:48 UTCEG score recompute
  67. 2026-08-11 16:48 UTCVendor advisory
  68. 2026-08-11 04:48 UTCEG score recompute
  69. 2026-08-11 04:48 UTCVendor advisory
  70. 2026-08-11 00:00 UTCEPSS rescore
  71. 2026-08-09 15:47 UTCEG score recompute
  72. 2026-08-09 13:46 UTCEPSS rescore
  73. 2026-08-09 03:48 UTCEG score recompute
  74. 2026-08-09 03:48 UTCVendor advisory
  75. 2026-08-08 16:37 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-59818?
CVE-2026-59818 is a high vulnerability published on July 8, 2026. 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…
When was CVE-2026-59818 disclosed?
CVE-2026-59818 was first published in the National Vulnerability Database on July 8, 2026, with the most recent update on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59818 actively exploited?
CVE-2026-59818 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 63.2% of all scored CVEs.
What is the CVSS score of CVE-2026-59818?
CVE-2026-59818 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-59818?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59818, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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