CVE-2024-49757: Zitadel User Registration Bypass Vulnerability

Severity: medium (CVSS 4.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-10-25 · updated 2026-06-17
Weakness: CWE-287

Description

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 registration button on the login page. Users could bypass this restriction by directly accessing the registration URL (/ui/login/loginname) and register a user that way. Versions 2.64.0, 2.63.5, 2.62.7, 2.61.4, 2.60.4, 2.59.5, and 2.58.7 contain a patch. No known workarounds are available.

Affected products

zitadel: before 2.58.7; from 2.59.0 before 2.59.5; from 2.60.0 before 2.60.4; from 2.61.0 before 2.61.4; from 2.62.0 before 2.62.7; from 2.63.0 before 2.63.5 — fixed in 2.58.7, 2.59.5, 2.60.4, 2.61.4, 2.62.7, 2.63.5

How to fix

Upgrade to a fixed version: zitadel 2.58.7, 2.59.5, 2.60.4, 2.61.4. Check the vendor advisory for mitigations.

References

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