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CVE-2026-56664— ZITADEL: Missing Token Lifecyle Validation (`exp` and `iat`) in JWT IdP Provider

CVSS 4.2 · Medium EPSS 0.20% · P11

Possible ATT&CK Techniques 1AI

T1078 · Valid Accounts

Affected Version Matrix 2

VendorProductVersion RangeStatus
zitadelzitadel>= 4.0.0-rc.1, < 4.15.2affected
< 3.4.12affected
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I. Basic Information for CVE-2026-56664

Vulnerability Information
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Vulnerability Title
ZITADEL: Missing Token Lifecyle Validation (`exp` and `iat`) in JWT IdP Provider
Source: CVE Program / CVE List V5
Vulnerability Description
ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL's external JWT Identity Provider validation in internal/idp/providers/jwt/session.go skips the maximum token age freshness check when an incoming token omits the iat claim, allowing arbitrarily old tokens from a trusted issuer to pass authentication. This issue is fixed in versions 3.4.12 and 4.15.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的会话过期机制
Source: CVE Program / CVE List V5
Vulnerability Title
ZITADEL 会话机制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZITADEL是瑞士ZITADEL公司开源的一个身份和访问管理平台。 ZITADEL存在会话机制问题漏洞，该漏洞源于JWT Identity Provider验证在传入令牌省略iat声明时跳过最大令牌时效检查，可能导致受信任颁发者的任意旧令牌通过身份验证。以下版本受到影响：4.0.0-rc.1至4.15.2之前版本和3.4.12之前版本。
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
zitadelzitadel >= 4.0.0-rc.1, < 4.15.2 -

II. Public POCs for CVE-2026-56664

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III. Intelligence Information for CVE-2026-56664

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Patches & Fixes for CVE-2026-56664 (2)

Vendor Advisories for CVE-2026-56664 (1)

Vendor Pages for CVE-2026-56664 (2)

Same Patch Batch · zitadel · 2026-07-10 · 9 CVEs total

CVE-2026-566688.1 HIGHZITADEL: Unauthorized Token Privilege Escalation in OAuth2 Token Exchange
CVE-2026-556727.4 HIGHZITADEL: Missing client_id binding in OIDC authorization code exchange and refresh token f
CVE-2026-566677.3 HIGHZITADEL: Stored XSS via Default URI Redirect in Login V2
CVE-2026-566664.8 MEDIUMZITADEL: Auto-linking by email: IdP-side email verification is not checked
CVE-2026-556694.2 MEDIUMZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider
CVE-2026-566654.2 MEDIUMZITADEL: Missing Token Expiration (`exp`) Validation in JWT IdP Provider
CVE-2026-55670ZITADEL: Cross-Tenant User Leakage via Recycled Identifiers
CVE-2026-55671ZITADEL: Server-Side Request Forgery (SSRF) and Denylist Bypass in Outgoing HTTP Component

IV. Related Vulnerabilities

Same product: zitadel
Same vendor: zitadel
Same weakness: CWE-613

V. Comments for CVE-2026-56664

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