CVE-2026-30836

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 78% 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
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 10.0Exploit: None knownExposed: 0

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

Step CA is an online certificate authority for secure, automated certificate management for DevOps. Versions 0.30.0-rc6 and below do not safeguard against unauthenticated certificate issuance through the SCEP UpdateReq. This issue has been fixed in version 0.30.0.

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity100% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

March 19, 2026

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated Sep 17, 2026
Patch available. Sources: github_commit, github_release, github.
github Patch Available

Authorization bypass in SCEP provisioner · Advisory · smallstep/certificates · GitHub

https://github.com/smallstep/certificates/security/advisories/GHSA-q4r8-xm5f-56gw
github_release Patch Available

Step CA v0.30.0-rc7 (26-03-18)

Patch available: smallstep/certificates v0.30.0-rc7 (pre-release)

https://github.com/smallstep/certificates/releases/tag/v0.30.0-rc7
github_commit

commit e6da031d5125 (smallstep/certificates)

Fix landed in smallstep/certificates commit e6da031d5125 — awaiting tagged release

https://github.com/smallstep/certificates/commit/e6da031d5125cfd99fe9a26f74bb41e4dacca4ef

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/smallstep/certificates—0.30.0—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 28× 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 171 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 19:27 UTCEPSS rescore
  3. 2026-09-17 19:30 UTCEPSS rescore
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  15. 2026-09-02 17:38 UTCOSV refresh
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  1. 2026-08-24 14:17 UTCEPSS rescore
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  6. 2026-08-19 17:03 UTCEPSS rescore
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  9. 2026-08-16 14:56 UTCEPSS rescore
  10. 2026-08-16 11:09 UTCEG score recompute
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  17. 2026-08-11 21:28 UTCEG score recompute
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  20. 2026-08-09 17:10 UTCEG score recompute
  21. 2026-08-09 13:46 UTCEPSS rescore
  22. 2026-08-07 17:22 UTCEG score recompute
  23. 2026-08-06 19:25 UTCEG score recompute
  24. 2026-08-06 13:46 UTCEPSS rescore
  25. 2026-08-06 01:33 UTCEG score recompute
  26. 2026-08-05 19:17 UTCEPSS rescore
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  28. 2026-08-04 00:41 UTCEG score recompute
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  43. 2026-07-23 03:08 UTCEG score recompute
  44. 2026-07-22 14:08 UTCEPSS rescore
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  46. 2026-07-21 15:24 UTCEPSS rescore
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  48. 2026-07-20 17:08 UTCEPSS rescore
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  50. 2026-07-19 14:31 UTCEPSS rescore
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  52. 2026-07-19 02:29 UTCEPSS rescore
  53. 2026-07-18 10:04 UTCEPSS rescore
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  55. 2026-07-17 14:29 UTCOSV refresh
  56. 2026-07-16 17:03 UTCEPSS rescore
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  58. 2026-07-15 16:57 UTCEPSS rescore
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  65. 2026-07-12 05:46 UTCEPSS rescore
  66. 2026-07-11 08:27 UTCEPSS rescore
  67. 2026-07-09 19:10 UTCEPSS rescore
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  73. 2026-07-05 02:30 UTCEPSS rescore
  74. 2026-07-04 06:31 UTCEPSS rescore
  75. 2026-07-01 15:06 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-30836?
CVE-2026-30836 is a critical vulnerability published on March 19, 2026. Step CA is an online certificate authority for secure, automated certificate management for DevOps. Versions 0.30.0-rc6 and below do not safeguard against unauthenticated certificate issuance through the SCEP UpdateReq. This issue has been fixed in version 0.30.0.
When was CVE-2026-30836 disclosed?
CVE-2026-30836 was first published in the National Vulnerability Database on March 19, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-30836 actively exploited?
CVE-2026-30836 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 77.5% of all scored CVEs.
What is the CVSS score of CVE-2026-30836?
CVE-2026-30836 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-30836?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-30836, 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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