CVE-2025-64717 ZITADEL vulnerable to Account Takeover with deactivated Instance IdP

What is CVE-2025-64717?

CVE-2025-64717 is a high-severity authentication bypass vulnerability in zitadel, published on 13 Nov 2025. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

ZITADEL is an open source identity management platform. Starting in version 2.50.0 and prior to versions 2.71.19, 3.4.4, and 4.6.6, a vulnerability in ZITADEL's federation process allowed auto-linking users from external identity providers to existing users in ZITADEL even if the corresponding IdP was not active or if the organization did not allow federated authentication. This vulnerability stems from the platform's failure to correctly check or enforce an organization's specific security settings during the authentication flow. An Organization Administrator can explicitly disable an IdP or disallow federation, but this setting was not being honored during the auto-linking process. This allowed an unauthenticated attacker to initiate a login using an IdP that should have been disabled for that organization. The platform would incorrectly validate the login and, based on a matching criteria, link the attacker's external identity to an existing internal user account. This may result in a full Account Takeover, bypassing the organization's mandated security controls. Note that accounts with MFA enabled can not be taken over by this attack. Also note that only IdPs create on an instance level would allow this to work. IdPs registered on another organization would always be denied in the (auto-)linking process. Versions 4.6.6, 3.4.4, and 2.71.19 resolve the issue by correctly validating the organization's login policy before auto-linking an external user. No known workarounds are available aside from upgrading.

Weakness: CWE-287

Which versions are affected by CVE-2025-64717?

9 open source packages ship an affected version, including github.com/zitadel/zitadel. It affects 1 product.

Products include Zitadel Zitadel.

How do I fix CVE-2025-64717?

Upgrade github.com/zitadel/zitadel to a fixed version for your release line: 1.80.0-v2.20.0.20251112124840-33c51deb2040, 2.71.19, 3.4.4 or 4.6.6.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2025-64717 being exploited?

There is no known exploitation of CVE-2025-64717 in the wild and no public exploit code.

Other vulnerabilities in zitadel

• CVE-2026-29191 ZITADEL: 1-Click Account Takeover via XSS in /saml-post Endpoint Critical 9.3
• CVE-2025-67494 ZITADEL Vulnerable to Unauthenticated Full-Read SSRF via V2 Login Critical 9.3
• CVE-2025-27507 IDOR Vulnerabilities in ZITADEL's Admin API that Primarily Impact LDAP Configurations Critical 9.0
• CVE-2025-64103 Zitadel Bypass Second Authentication Factor High 8.7
• CVE-2025-31123 Zitadel Expired JWT Keys Usable for Authorization Grants High 8.7

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-j4g7-v4m4-77px, GO-2025-4124.