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Vulnerabilities

Vulnerability · CVE-2026-30836

Step CA is an online certificate authority for secure, automated certificate management for DevOps.

Published Mar 19, 2026 · catalog updated Jun 17, 2026 · Step CA is an

Check if you run it

No confirmed exploitation is on record for CVE-2026-30836. EPSS is 0.32%. Act only if a listed version of Step CA is an is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Step CA is an).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical10.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.32%
Remediation
Advisory link
Affected products
cpe smallstep/step-ca

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe smallstep/step-ca0.30.0

How to fix CVE-2026-30836

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-30836. EPSS is 0.32%. Act only if a listed version of Step CA is an is installed.

Which versions are affected?

Compare what you have installed with 0.30.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-287: Improper Authentication; CWE-295: Improper Certificate Validation. EPSS 0.32%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 19, 2026 · NIST NVD

    Detected

    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.

  2. Jun 17, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-30836

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-30836

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-30836

    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.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.