How severe is CVE-2026-30836?

CVE-2026-30836 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-30836 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30836?

CVE-2026-30836 primarily affects Smallstep Step-ca. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-30836?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-30836 have an EU (EUVD) identifier?

Yes. CVE-2026-30836 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13200.

When was CVE-2026-30836 published?

CVE-2026-30836 was published on 2026-03-19 and last updated on 2026-06-17.

CVE-2026-30836

CVE-2026-30836 is a critical-severity vulnerability in Smallstep Step-ca with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13200
Weakness: CWE-295
Affected product: Smallstep Step-ca
Published: 2026-03-19
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-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.
How severe is CVE-2026-30836?: CVE-2026-30836 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-30836 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30836?: CVE-2026-30836 primarily affects Smallstep Step-ca. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-30836?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-30836 have an EU (EUVD) identifier?: Yes. CVE-2026-30836 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13200.
When was CVE-2026-30836 published?: CVE-2026-30836 was published on 2026-03-19 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:smallstep:step-ca:*:*:*:*:*:go:*:*
cpe:2.3:a:smallstep:step-ca:0.30.0:rc1:*:*:*:go:*:*
cpe:2.3:a:smallstep:step-ca:0.30.0:rc2:*:*:*:go:*:*
cpe:2.3:a:smallstep:step-ca:0.30.0:rc3:*:*:*:go:*:*
cpe:2.3:a:smallstep:step-ca:0.30.0:rc4:*:*:*:go:*:*
cpe:2.3:a:smallstep:step-ca:0.30.0:rc5:*:*:*:go:*:*
cpe:2.3:a:smallstep:step-ca:0.30.0:rc6:*:*:*:go:*:*

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