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CVE-2026-105214— Zitadel before 4.16.2 SSRF via Organization Domain HTTP Verification

Quick assessment

Affected
zitadel zitadel
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Zitadel 4.16.2 之前的版本中存在一个服务器端请求伪造（SSRF）漏洞，攻击者可以通过组织域名的 HTTP 验证机制，诱导服务器访问内部资源。该漏洞源于在验证过程中使用了 Go 默认内置的 函数，而非经过安全加固的受保护客户端。利用这一缺陷，攻击者可以注册指向环回地址（loopback）、内部网络地址或云元数据服务的域名，从而实现对内部端口的扫描和内部网络拓扑的探测。

CVSS 2.3 · Low

Affected Version Matrix 2

VendorProduct Version RangeStatus
zitadel zitadel < 4.16.2 affected
4.16.2 unaffected
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I. Basic Information for CVE-2026-105214

Vulnerability Information
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Vulnerability Title
Zitadel before 4.16.2 SSRF via Organization Domain HTTP Verification
Source: CVE Program / CVE List V5
Vulnerability Description
Zitadel before 4.16.2 contains a server-side request forgery vulnerability that allows attackers to make the server request internal resources through organization domain HTTP verification. The challenge fetch uses Go's default http.Get instead of the protected client, so attackers can register domains that redirect to loopback, internal, or cloud metadata addresses to scan ports and map internal networks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
zitadel zitadel 0 ~ 4.16.2 -

II. Public POCs for CVE-2026-105214

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III. Intelligence Information for CVE-2026-105214

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Vendor Advisories for CVE-2026-105214 (2)

Same Patch Batch · zitadel · 2026-10-04 · 10 CVEs total

CVE-2026-105207 9.8 CRITICAL ZITADEL before 4.17.3 Account Takeover via External IdP Linking
CVE-2026-105209 9.6 CRITICAL ZITADEL before 3.4.15 and 4.17.1 Cross-Organization Account Takeover via Passkey Enrollmen
CVE-2026-105215 9.1 CRITICAL ZITADEL before 4.16.2 Account Pre-Hijacking via Forged External IdP Callback
CVE-2026-105210 8.2 HIGH ZITADEL before 4.17.1 Unauthenticated MFA Enrollment via Login V1 Init Handlers
CVE-2026-105213 8.2 HIGH ZITADEL before 4.17.1 Authentication Bypass via Login V2 for Deactivated Organizations
CVE-2026-105211 8.1 HIGH ZITADEL before 4.17.1 Authentication Bypass via Login V2 OTP returnCode
CVE-2026-105208 7.7 HIGH ZITADEL before 4.17.3 Session Hijacking via Forgeable IdP Intent Tokens
CVE-2026-105212 7.5 HIGH ZITADEL before 3.4.14 and 4.16.2 Account Takeover via Passkey Enrollment
CVE-2026-105206 5.3 MEDIUM ZITADEL before 4.17.3 Cross-Organization Authentication Method Enumeration via User Servic

IV. Related Vulnerabilities

Same product: zitadel
Same vendor: zitadel
Same weakness: CWE-918

V. Comments for CVE-2026-105214

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