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CVE-2026-119129— ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.19.5 Account Takeover via Device Authorization Approval

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 3.0.0 至 3.4.15 版本，以及 4.0.0 至 4.19.5 之前的版本，在“登录 V2"功能中存在授权缺失漏洞。该漏洞允许攻击者利用受害者的现有会话，在未经用户同意的情况下批准 OAuth 2.0 设备授权。攻击者可以向已登录的用户发送包含攻击者用户代码的链接，从而获取受害者的令牌，并可通过 OIDC 设备授权 API 绕过项目访问设置。

CVSS 8.1 · High
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I. Basic Information for CVE-2026-119129

Vulnerability Information
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Vulnerability Title
ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.19.5 Account Takeover via Device Authorization Approval
Source: CVE Program / CVE List V5
Vulnerability Description
ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.19.5 contains a missing authorization vulnerability in Login V2 that allows attackers to approve OAuth 2.0 device authorizations using a victim's existing session without consent. Attackers can send a signed-in user a link carrying the attacker's user code to obtain the victim's tokens, and can bypass project access settings via the OIDC device authorization API.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
zitadel zitadel 4.0.0 ~ 4.19.5 -
zitadel zitadel 3.0.0 ~ 3.4.15 -

II. Public POCs for CVE-2026-119129

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-119129

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Other References for CVE-2026-119129 (2)

Same Patch Batch · zitadel · 2026-10-29 · 3 CVEs total

CVE-2026-119127 8.1 HIGH ZITADEL 4.0.0 before 4.19.5 Account Takeover via Login V2 Host Header Injection
CVE-2026-119128 7.4 HIGH ZITADEL 4.0.0 before 4.19.5 Login V2 Account Takeover via Forgeable verificationCheck Cook

IV. Related Vulnerabilities

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