CVE-2026-109373

ZITADEL 3.0.0 before 4.19.2 contains an authentication bypass vulnerability in the Login V2 UI that allows unauthenticated attackers to obtain other users' session tokens by forging unsigned session cookies. Attackers can guess time-ordered session IDs around a victim's sign-in and supply them wi...

CVE-2026-109373 ZITADEL 3.0.0 before 4.19.2 Account Takeover via Unsigned Login V2 Session Cookie

ZITADEL 3.0.0 before 4.19.2 contains an authentication bypass vulnerability in the Login V2 UI that allows unauthenticated attackers to obtain other users' session tokens by forging unsigned session cookies. Attackers can guess time-ordered session IDs around a victim's sign-in and supply them wi...

CVE-2026-109373

ZITADEL versions 3.0.0 before 4.19.2 are vulnerable to an authentication bypass in the Login V2 UI . The root cause allows unauthenticated attackers to forge unsigned session cookies by guessing time-ordered session IDs near a victim's sign-in. By supplying these IDs with empty tokens, attackers ...

CVE-2026-109373 ZITADEL 3.0.0 before 4.19.2 Account Takeover via Unsigned Login V2 Session Cookie

ZITADEL 3.0.0 before 4.19.2 contains an authentication bypass vulnerability in the Login V2 UI that allows unauthenticated attackers to obtain other users' session tokens by forging unsigned session cookies. Attackers can guess time-ordered session IDs around a victim's sign-in and supply them wi...

EUVD-2026-97671

ZITADEL 3.0.0 before 4.19.2 contains an authentication bypass vulnerability in the Login V2 UI that allows unauthenticated attackers to obtain other users' session tokens by forging unsigned session cookies. Attackers can guess time-ordered session IDs around a victim's sign-in and supply them wi...

PT-2026-110786

Name of the Vulnerable Software and Affected Versions ZITADEL versions 3.0.0 through 4.19.1 Description An authentication bypass exists in the Login V2 UI. Unauthenticated attackers can obtain session tokens of other users by forging unsigned session cookies. By guessing time-ordered session IDs...

CVE-2026-29193

ZITADEL is an open source identity management platform. From version 4.0.0 to 4.12.0, a vulnerability in Zitadel's login V2 UI allowed users to bypass login behavior and security policies and self-register new accounts or sign in using password even if corresponding options were disabled in their...

CVE-2026-29193: Improper Authentication

ZITADEL is an open source identity management platform. From version 4.0.0 to 4.12.0, a vulnerability in Zitadel's login V2 UI allowed users to bypass login behavior and security policies and self-register new accounts or sign in using password even if corresponding options were disabled in their...