CVE-2025-27507: IDOR Vulnerabilities in ZITADEL's Admin API that Primarily Impact LDAP Configurations

Severity: critical (CVSS 9.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-03-04 · updated 2026-06-17
Weakness: CWE-639

Description

The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. ZITADEL's Admin API contains Insecure Direct Object Reference (IDOR) vulnerabilities that allow authenticated users, without specific IAM roles, to modify sensitive settings. While several endpoints are affected, the most critical vulnerability lies in the ability to manipulate LDAP configurations. Customers who do not utilize LDAP for authentication are not at risk from the most severe aspects of this vulnerability. However, upgrading to the patched version to address all identified issues is strongly recommended. This vulnerability is fixed in 2.71.0, 2.70.1, ,2.69.4, 2.68.4, 2.67.8, 2.66.11, 2.65.6, 2.64.5, and 2.63.8.

Affected products

zitadel: before 2.63.8; from 2.64.0 before 2.64.5; from 2.65.0 before 2.65.6; from 2.66.0 before 2.66.11; from 2.67.0 before 2.67.8; from 2.68.0 before 2.68.4 — fixed in 2.63.8, 2.64.5, 2.65.6, 2.66.11, 2.67.8, 2.68.4

How to fix

Upgrade to a fixed version: zitadel 2.63.8, 2.64.5, 2.65.6, 2.66.11. Check the vendor advisory for mitigations.

References

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