CVE-2026-62290

HIGHPre-NVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 99% 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, secondary
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. From 1.18.0 until 1.19.6 and 1.20.3, Challenge resources under acme.cert-manager.io can be created directly by namespace users without admission validation tying the Challenge to an Order, owner reference, or Issuer-selected solver, allowing attacker-controlled Challenge.spec.solver values referencing a ClusterIssuer to bypass DNS01 solver selectors such as dnsZones, dnsNames, and matchLabels and cause cert-manager to use ClusterIssuer DNS credentials for attacker-selected provider settings and DNS names, including disclosure of X-Api-User and X-Api-Key headers for acme-dns. This issue is fixed in versions 1.19.6 and 1.20.3.

CVSS v3
7.3
EG Score
7.3HIGHmedium confidence
EG Risk
33
EG Risk 33/100

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
Severity73% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.1%
EPSS %ILE
1st
KEV
Not listed

Published

July 16, 2026

Last Modified

July 30, 2026

Advisory Details (7)

Auto-updated Jul 16, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available🟡 PoC Available

Direct ACME Challenge resources can bypass Issuer DNS01 solver policy and use ClusterIssuer DNS credentials · Advisory · cert-manager/cert-manager · GitHub

https://github.com/cert-manager/cert-manager/security/advisories/GHSA-8rvj-mm4h-c258
github_release Patch Available

v1.20.3

Patch available: cert-manager/cert-manager v1.20.3

https://github.com/cert-manager/cert-manager/releases/tag/v1.20.3
github_release Patch Available

v1.19.6

Patch available: cert-manager/cert-manager v1.19.6

https://github.com/cert-manager/cert-manager/releases/tag/v1.19.6
github_pr Patch Available

[release-1.19] Restrict Challenge and Order verbs in aggregate edit ClusterRole

Patch available: cert-manager/cert-manager v1.19.6 (PR #8941 merged 2026-06-25)

https://github.com/cert-manager/cert-manager/pull/8941
github_pr Patch Available

[release-1.20] Restrict Challenge and Order verbs in aggregate edit ClusterRole

Patch available: cert-manager/cert-manager v1.20.3 (PR #8940 merged 2026-06-25)

https://github.com/cert-manager/cert-manager/pull/8940
github_commit Patch Available

commit b37dbf01ecea (cert-manager/cert-manager)

Patch available: cert-manager/cert-manager v1.19.6 (contains commit b37dbf01ecea)

https://github.com/cert-manager/cert-manager/commit/b37dbf01ecea50a0b3a19df0a7fe4c5ad6803f16
github_commit Patch Available

commit 6bda47297c8f (cert-manager/cert-manager)

Patch available: cert-manager/cert-manager v1.20.3 (contains commit 6bda47297c8f)

https://github.com/cert-manager/cert-manager/commit/6bda47297c8fbc6b121b8b76624b668d26f1a155

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 22× 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.

  1. 2026-09-28 08:16 UTCEG score recompute
  2. 2026-09-24 06:58 UTCEG score recompute
  3. 2026-09-23 17:54 UTCEPSS rescore
  4. 2026-09-23 03:01 UTCEG score recompute
  5. 2026-09-20 20:16 UTCEPSS rescore
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 04:38 UTCEG score recompute
  8. 2026-09-17 10:29 UTCEG score recompute
  9. 2026-09-16 14:08 UTCEPSS rescore
  10. 2026-09-13 23:05 UTCEG score recompute
  11. 2026-09-13 07:07 UTCEG score recompute
  12. 2026-09-11 21:39 UTCEG score recompute
  13. 2026-09-11 14:53 UTCEPSS rescore
  14. 2026-09-11 09:37 UTCEPSS rescore
  15. 2026-09-08 22:01 UTCEPSS rescore
  16. 2026-09-08 00:26 UTCEG score recompute
  17. 2026-09-06 13:47 UTCEPSS rescore
  18. 2026-09-05 20:33 UTCEG score recompute
  19. 2026-09-04 05:07 UTCEPSS rescore
  20. 2026-09-01 13:54 UTCEPSS rescore
  21. 2026-09-01 04:40 UTCEPSS rescore
  22. 2026-08-31 04:29 UTCEG score recompute
  23. 2026-08-30 19:17 UTCEPSS rescore
  24. 2026-08-30 03:30 UTCEG score recompute
  25. 2026-08-30 01:22 UTCEPSS rescore
Show 66 more
  1. 2026-08-28 21:42 UTCEPSS rescore
  2. 2026-08-28 01:49 UTCEG score recompute
  3. 2026-08-27 14:25 UTCEPSS rescore
  4. 2026-08-27 00:17 UTCEG score recompute
  5. 2026-08-26 14:46 UTCEPSS rescore
  6. 2026-08-25 20:58 UTCEG score recompute
  7. 2026-08-25 13:49 UTCEPSS rescore
  8. 2026-08-24 19:18 UTCEG score recompute
  9. 2026-08-22 01:11 UTCEG score recompute
  10. 2026-08-21 23:49 UTCEPSS rescore
  11. 2026-08-21 00:34 UTCEG score recompute
  12. 2026-08-20 22:55 UTCEPSS rescore
  13. 2026-08-19 23:52 UTCEG score recompute
  14. 2026-08-19 17:04 UTCEPSS rescore
  15. 2026-08-17 14:01 UTCEG score recompute
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 01:43 UTCEG score recompute
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 13:24 UTCEG score recompute
  20. 2026-08-15 12:47 UTCEG score recompute
  21. 2026-08-15 01:30 UTCEPSS rescore
  22. 2026-08-13 23:48 UTCEG score recompute
  23. 2026-08-13 22:00 UTCEPSS rescore
  24. 2026-08-12 23:07 UTCEG score recompute
  25. 2026-08-12 13:51 UTCEPSS rescore
  26. 2026-08-11 22:30 UTCEG score recompute
  27. 2026-08-11 10:12 UTCEG score recompute
  28. 2026-08-11 00:00 UTCEPSS rescore
  29. 2026-08-09 21:17 UTCEG score recompute
  30. 2026-08-09 13:47 UTCEPSS rescore
  31. 2026-08-08 20:41 UTCEG score recompute
  32. 2026-08-08 16:37 UTCEPSS rescore
  33. 2026-08-07 20:04 UTCEG score recompute
  34. 2026-08-06 19:27 UTCEG score recompute
  35. 2026-08-06 13:47 UTCEPSS rescore
  36. 2026-08-06 07:08 UTCEG score recompute
  37. 2026-08-05 19:17 UTCEPSS rescore
  38. 2026-08-05 19:17 UTCEPSS rescore
  39. 2026-08-04 18:09 UTCEG score recompute
  40. 2026-08-04 15:10 UTCEPSS rescore
  41. 2026-08-04 10:39 UTCEPSS rescore
  42. 2026-08-03 17:21 UTCEG score recompute
  43. 2026-08-03 10:36 UTCEPSS rescore
  44. 2026-08-01 16:01 UTCEG score recompute
  45. 2026-08-01 04:16 UTCEPSS rescore
  46. 2026-07-31 03:01 UTCEG score recompute
  47. 2026-07-30 16:28 UTCEPSS rescore
  48. 2026-07-30 14:00 UTCEG score recompute
  49. 2026-07-29 01:05 UTCEG score recompute
  50. 2026-07-28 15:37 UTCEPSS rescore
  51. 2026-07-26 23:43 UTCEG score recompute
  52. 2026-07-26 14:54 UTCEPSS rescore
  53. 2026-07-26 14:54 UTCEPSS rescore
  54. 2026-07-26 11:24 UTCEG score recompute
  55. 2026-07-25 14:18 UTCEPSS rescore
  56. 2026-07-25 14:18 UTCEPSS rescore
  57. 2026-07-24 14:18 UTCEPSS rescore
  58. 2026-07-24 14:18 UTCEPSS rescore
  59. 2026-07-23 14:18 UTCEPSS rescore
  60. 2026-07-23 14:18 UTCEPSS rescore
  61. 2026-07-23 03:21 UTCEG score recompute
  62. 2026-07-19 02:34 UTCEG score recompute
  63. 2026-07-19 02:29 UTCEPSS rescore
  64. 2026-07-18 10:04 UTCEPSS rescore
  65. 2026-07-16 19:45 UTCEG score recompute
  66. 2026-07-16 19:44 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-62290?
CVE-2026-62290 is a high vulnerability published on July 16, 2026. cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. From 1.18.0 until 1.19.6 and 1.20.3, Challenge resources under acme.cert-manager.io can be created directly by namespace…
When was CVE-2026-62290 disclosed?
CVE-2026-62290 was first published on July 16, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-62290 actively exploited?
CVE-2026-62290 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-62290?
CVE-2026-62290 has a CVSS base score of 7.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-62290?
A fix for CVE-2026-62290 is available: update to the fixed version the vendor names in its advisory.

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