CVE-2026-30836

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Source
https://cve.org/CVERecord?id=CVE-2026-30836
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-30836.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-30836
Aliases
Downstream
ALPINE (1)
CGA (15)
CLEANSTART (14)
MINI (2)
openSUSE (1)
SUSE (1)
UBUNTU (1)
Related
Published
2026-03-19T20:37:05Z
Modified
2026-10-22T10:34:59Z
Severity
  • 10.0 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N CVSS Calculator
Summary
Step CA: Unauthenticated Certificate Issuance via SCEP UpdateReq (MessageType=18)
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-287",
        "CWE-295"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30836.json"
}
References

Affected packages

Git / github.com/smallstep/certificates

Affected ranges

Type
GIT
Repo
https://github.com/smallstep/certificates
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
d34619c55e5cd46ce08d8bdb8c846df2c4d8aca0
Introduced
a7ceb2d08b9d11406d8168c5d0aae098fd38a481
Fixed
e6da031d5125cfd99fe9a26f74bb41e4dacca4ef
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:smallstep:step-ca:*:*:*:*:*:go:*:*",
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "0.30.0"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:smallstep:step-ca:0.30.0:rc1:*:*:*:go:*:*",
            "range": [
                {
                    "introduced": "0.30.0-rc1"
                },
                {
                    "last_affected": "0.30.0-rc1"
                }
            ],
            "source": "CPE_STRING"
        },
        {
            "cpe": "cpe:2.3:a:smallstep:step-ca:0.30.0:rc2:*:*:*:go:*:*",
            "range": [
                {
                    "introduced": "0.30.0-rc2"
                },
                {
                    "last_affected": "0.30.0-rc2"
                }
            ],
            "source": "CPE_STRING"
        },
        {
            "cpe": "cpe:2.3:a:smallstep:step-ca:0.30.0:rc3:*:*:*:go:*:*",
            "range": [
                {
                    "introduced": "0.30.0-rc3"
                },
                {
                    "last_affected": "0.30.0-rc3"
                }
            ],
            "source": "CPE_STRING"
        },
        {
            "cpe": "cpe:2.3:a:smallstep:step-ca:0.30.0:rc4:*:*:*:go:*:*",
            "range": [
                {
                    "introduced": "0.30.0-rc4"
                },
                {
                    "last_affected": "0.30.0-rc4"
                }
            ],
            "source": "CPE_STRING"
        },
        {
            "cpe": "cpe:2.3:a:smallstep:step-ca:0.30.0:rc5:*:*:*:go:*:*",
            "range": [
                {
                    "introduced": "0.30.0-rc5"
                },
                {
                    "last_affected": "0.30.0-rc5"
                }
            ],
            "source": "CPE_STRING"
        },
        {
            "cpe": "cpe:2.3:a:smallstep:step-ca:0.30.0:rc6:*:*:*:go:*:*",
            "range": [
                {
                    "introduced": "0.30.0-rc6"
                },
                {
                    "last_affected": "0.30.0-rc6"
                }
            ],
            "source": "CPE_STRING"
        },
        {
            "range": [
                {
                    "fixed": "e6da031d5125cfd99fe9a26f74bb41e4dacca4ef"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v0.30.0-rc7",
            "range": [
                {
                    "fixed": "d34619c55e5cd46ce08d8bdb8c846df2c4d8aca0"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

0.*
0.30.0-rc1
0.30.0-rc2
0.30.0-rc3
0.30.0-rc4
0.30.0-rc5
0.30.0-rc6
v0.*
v0.30.0-rc1
v0.30.0-rc3
v0.30.0-rc4

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-30836.json"