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I. Basic Information for CVE-2026-30836
Vulnerability Information
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Vulnerability Title
Step CA: Unauthenticated Certificate Issuance via SCEP UpdateReq (MessageType=18)
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
认证机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Smallstep step-ca 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Smallstep step-ca是美国Smallstep公司的一个面向DevOps的安全、自动化证书管理的在线证书颁发机构。 Smallstep step-ca 0.30.0-rc6及之前版本存在信任管理问题漏洞，该漏洞源于未对SCEP UpdateReq进行身份验证保护，可能导致未经身份验证的证书颁发。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
smallstepcertificates < 0.30.0 -
II. Public POCs for CVE-2026-30836
#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
kimi-k2.5 · 9019 chars
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III. Intelligence Information for CVE-2026-30836
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IV. Related Vulnerabilities
Same product: certificates
Same vendor: smallstep
Same weakness: CWE-287
V. Comments for CVE-2026-30836

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