CVE-2026-29191— ZITADEL: 1-Click Account Takeover via XSS in /saml-post Endpoint
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I. Basic Information for CVE-2026-29191
Vulnerability Information
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Vulnerability Title
ZITADEL: 1-Click Account Takeover via XSS in /saml-post Endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
ZITADEL is an open source identity management platform. From version 4.0.0 to 4.11.1, a vulnerability in Zitadel's login V2 interface was discovered that allowed a possible account takeover via XSS in /saml-post Endpoint. This issue has been patched in version 4.12.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
ZITADEL 跨站脚本漏洞
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 4.0.0至4.11.1版本存在跨站脚本漏洞，该漏洞源于登录V2接口存在跨站脚本问题，可能导致账户接管。
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)
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Affected Products
II. Public POCs for CVE-2026-29191
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · zitadel · 2026-03-07 · 4 CVEs total
| CVE-2026-29193 | 8.2 HIGH | ZITADEL: Bypassing Zitadel Login Behavior and Security Policy in Login V2 |
| CVE-2026-29067 | 8.1 HIGH | ZITADEL: Account Takeover Due to Improper Instance Validation in V2 Login |
| CVE-2026-29192 | 7.7 HIGH | ZITADEL: Stored XSS via Default URI Redirect Leads to Account Takeover |
IV. Related Vulnerabilities
Same product: zitadel
- CVE-2026-33132
ZITADEL is missing enforcement of organization scopes - CVE-2026-32132
ZITADEL: Reactivation of Expired Passkey Registration Codes - CVE-2026-32131
ZITADEL Cross-Tenant Information Disclosure in Management AP - CVE-2026-32130
ZITADEL SCIM Authentication Bypass via URL Encoding - CVE-2026-29067
ZITADEL: Account Takeover Due to Improper Instance Validatio
Same vendor: zitadel
- CVE-2026-33132
ZITADEL is missing enforcement of organization scopes - CVE-2026-32132
ZITADEL: Reactivation of Expired Passkey Registration Codes - CVE-2026-32131
ZITADEL Cross-Tenant Information Disclosure in Management AP - CVE-2026-32130
ZITADEL SCIM Authentication Bypass via URL Encoding - CVE-2026-29067
ZITADEL: Account Takeover Due to Improper Instance Validatio
Same weakness: CWE-79
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V. Comments for CVE-2026-29191
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