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 100% 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%CVSS: 7.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
7.3(medium)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity73% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
0%
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 12× in last 7d / 20× 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. 2026-07-30 16:28 UTCEPSS rescore
  2. 2026-07-30 14:00 UTCEG score recompute
  3. 2026-07-29 01:05 UTCEG score recompute
  4. 2026-07-28 15:37 UTCEPSS rescore
  5. 2026-07-26 23:43 UTCEG score recompute
  6. 2026-07-26 14:54 UTCEPSS rescore
  7. 2026-07-26 14:54 UTCEPSS rescore
  8. 2026-07-26 11:24 UTCEG score recompute
  9. 2026-07-25 14:18 UTCEPSS rescore
  10. 2026-07-25 14:18 UTCEPSS rescore
  11. 2026-07-24 14:18 UTCEPSS rescore
  12. 2026-07-24 14:18 UTCEPSS rescore
  13. 2026-07-23 14:18 UTCEPSS rescore
  14. 2026-07-23 14:18 UTCEPSS rescore
  15. 2026-07-23 03:21 UTCEG score recompute
  16. 2026-07-19 02:34 UTCEG score recompute
  17. 2026-07-19 02:29 UTCEPSS rescore
  18. 2026-07-18 10:04 UTCEPSS rescore
  19. 2026-07-16 19:45 UTCEG score recompute
  20. 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 in the National Vulnerability Database 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% probability of exploitation in the next 30 days, which ranks it in the top 99.8% of all scored CVEs.
What is the CVSS score of CVE-2026-62290?
CVE-2026-62290 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-62290?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62290, 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.

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