CVE-2026-105206

ZITADEL versions 3.0.0 through 3.4.15 and 4.x before 4.17.3 are vulnerable to an incorrect authorization flaw in the User Service API . The vulnerability exists because the system verifies the user.read permission against the caller's organization rather than the organization that owns the target...

Zitadel - User Registration Bypass

The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. Due to a missing security check in versions prior to 2.64.0, 2.63.5, 2.62.7, 2.61.4, 2.60.4, 2.59.5, and 2.58.7, disabling the "User Registration allowed" option only hid the...

PT-2026-104637

ZITADEL 4.x before 4.17.1 does not check an organization's inactive state during Login V2 authentication, verifying only the individual user's status. Users of a deactivated organization who hold valid credentials, an existing session, or a refresh token can still sign in, create sessions, and...

PT-2026-104636

ZITADEL 3.x before 3.4.14 and 4.x before 4.16.2 contains an authentication bypass in the hosted Login V1 and Login V2 UIs that accepts passkey or other authenticator enrollment on identify-only login sessions, before any primary factor is verified. Unauthenticated attackers knowing only a victim'...

PT-2026-104632

ZITADEL 4.x before 4.17.3 and 3.x through 3.4.15 protects IdP intent tokens with unauthenticated, malleable encryption, allowing authenticated users to tamper with their own token so it is accepted for another user's external login intent. An attacker who predicts a victim's in-flight intent...

PT-2026-104631

Name of the Vulnerable Software and Affected Versions ZITADEL versions 3.0.0 through 3.4.15 ZITADEL versions 4.0.0 through 4.17.2 Description An issue exists where links are created between user accounts and external identity providers without verifying a primary factor or the caller's permission...

PT-2026-104630

ZITADEL 3.0.0 through 3.4.15 and 4.x before 4.17.3 contains an incorrect authorization flaw in the User Service API, which verifies user.read against the caller's organization rather than the organization owning the target user. An authenticated member holding org-scoped user.read can query GET...

PT-2026-104635

Name of the Vulnerable Software and Affected Versions ZITADEL versions prior to 4.17.1 Description An authentication bypass exists in Login V2 that allows unauthenticated attackers to take over accounts. Attackers who know the login name of a victim enrolled in OTP-Email and OTP-SMS can obtain...

PT-2026-104634

ZITADEL 3.x before 3.4.15 and 4.x before 4.17.1 contains a missing authentication flaw in the hosted Login V1 UI, whose second-factor enrollment and initialization handlers act on an identify-only session before any primary factor is verified. Attackers knowing only a victim's login name can enro...

PT-2026-104639

ZITADEL before 3.4.14 and 4.x before 4.16.2 contains an authentication bypass in the hosted Login V1 UI because the 'external account not found' registration endpoint trusts client-supplied external identity fields without a completed IdP callback. Unauthenticated attackers can submit forged...

PT-2026-104638

Zitadel before 4.16.2 contains a server-side request forgery vulnerability that allows attackers to make the server request internal resources through organization domain HTTP verification. The challenge fetch uses Go's default http.Get instead of the protected client, so attackers can register...

PT-2026-104633

Name of the Vulnerable Software and Affected Versions ZITADEL versions 3.x through 3.4.14 ZITADEL versions 4.x through 4.17.0 Description An improper authorization flaw exists during the issuance of passkey or passwordless enrollment codes. The system validates the organization specified in the...

GHSA-VCVR-R3JV-PC5J vulnerabilities

Vulnerabilities for packages: homepage, zitadel, peerdb-ui...

GO-2026-6589 ZITADEL: MFA bypass via session reuse in Login V2 in github.com/zitadel/zitadel

ZITADEL: MFA bypass via session reuse in Login V2 in github.com/zitadel/zitadel...

GHSA-9993-RFWP-RHWF ZITADEL: MFA bypass via session reuse in Login V2

Summary A vulnerability in ZITADEL’s Login V2 UI allowed a password-verified browser session to be reused for a new authentication request without re-checking a user’s enrolled second factor TOTP, OTP, or U2F. An attacker who already knows valid credentials can fully authenticate to an applicatio...

ZITADEL: MFA bypass via session reuse in Login V2

Summary A vulnerability in ZITADEL’s Login V2 UI allowed a password-verified browser session to be reused for a new authentication request without re-checking a user’s enrolled second factor TOTP, OTP, or U2F. An attacker who already knows valid credentials can fully authenticate to an applicatio...

GHSA-FGMF-7RF8-M6VF ZITADEL: Actions V1 sandbox escape: host file read via require()

Summary A vulnerability in ZITADEL Actions V1 allows an organization Action author to read files from the ZITADEL host filesystem through the JavaScript require module loader. On common self-hosted deployments this can be chained to steal bootstrap credentials including the Login Client PAT and...

ZITADEL: Actions V1 sandbox escape: host file read via require()

Summary A vulnerability in ZITADEL Actions V1 allows an organization Action author to read files from the ZITADEL host filesystem through the JavaScript require module loader. On common self-hosted deployments this can be chained to steal bootstrap credentials including the Login Client PAT and...

CVE-2026-85057

ZITADEL is an open source identity management platform. From 3.0.0 until 3.4.13 and 4.16.1, ZITADEL Actions V1 enables the goja Node-compatible require registry without restricting its filesystem source loader. An organization Action author with ORGOWNER, org.action.write, and org.flow.write...

CVE-2026-85056

ZITADEL is an open source identity management platform. From 4.0.0 until 4.16.1, ZITADEL Login V2 creates a browser session after password verification and can reuse that session for a later authentication request without verifying a user's enrolled TOTP, OTP, or U2F second factor. When the MFA...