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CVE-2026-27946— ZITADEL Users Can Self-Verify Email/Phone via UpdateHumanUser API

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是瑞士ZITADEL开源的一个 Auth0、Firebase Auth、AWS Cognito 以及为容器和无服务器时代构建的 Keycloak 的现代开源替代方案。 ZITADEL 4.11.1之前版本和3.4.7之前版本存在安全漏洞，该漏洞源于允许用户无需验证流程即可标记其电子邮件和电话为已验证。

AI Predicted 6.5 Difficulty: Trivial EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1098 · Account Manipulation
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I. Basic Information for CVE-2026-27946

Vulnerability Information
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Vulnerability Title
ZITADEL Users Can Self-Verify Email/Phone via UpdateHumanUser API
Source: CVE Program / CVE List V5
Vulnerability Description
ZITADEL is an open source identity management platform. Prior to versions 4.11.1 and 3.4.7, a vulnerability in Zitadel's self-management capability allowed users to mark their email and phone as verified without going through an actual verification process. The patch in versions 4.11.1 and 3.4.7 resolves the issue by requiring the correct permission in case the verification flag is provided and only allows self-management of the email address and/or phone number itself. If an upgrade is not possible, an action (v2) could be used to prevent setting the verification flag on the own user.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
ZITADEL 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZITADEL是瑞士ZITADEL开源的一个 Auth0、Firebase Auth、AWS Cognito 以及为容器和无服务器时代构建的 Keycloak 的现代开源替代方案。 ZITADEL 4.11.1之前版本和3.4.7之前版本存在安全漏洞，该漏洞源于允许用户无需验证流程即可标记其电子邮件和电话为已验证。
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

Vendor Product Affected Versions CPE Subscribe
zitadel zitadel >= 4.0.0, < 4.11.0 -

II. Public POCs for CVE-2026-27946

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III. Intelligence Information for CVE-2026-27946

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Vendor Advisories for CVE-2026-27946 (1)

Same Patch Batch · zitadel · 2026-02-26 · 3 CVEs total

CVE-2026-27840 4.3 MEDIUM ZITADEL's truncated opaque tokens are still valid
CVE-2026-27945 ZITADEL has potential SSRF via Actions

IV. Related Vulnerabilities

Same product: zitadel
Same vendor: zitadel
Same weakness: CWE-862