CVE-2023-22492: RefreshToken invalidation vulnerability

Severity: medium (CVSS 5.9 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: 2023-01-11 · updated 2026-06-17
Weakness: CWE-613

Description

ZITADEL is a combination of Auth0 and Keycloak. RefreshTokens is an OAuth 2.0 feature that allows applications to retrieve new access tokens and refresh the user's session without the need for interacting with a UI. RefreshTokens were not invalidated when a user was locked or deactivated. The deactivated or locked user was able to obtain a valid access token only through a refresh token grant. When the locked or deactivated user’s session was already terminated (“logged out”) then it was not possible to create a new session. Renewal of access token through a refresh token grant is limited to the configured amount of time (RefreshTokenExpiration). As a workaround, ensure the RefreshTokenExpiration in the OIDC settings of your instance is set according to your security requirements. This issue has been patched in versions 2.17.3 and 2.16.4.

Affected products

zitadel: from 2.0.0 before 2.16.4; from 2.17.0 before 2.17.3 — fixed in 2.16.4, 2.17.3

How to fix

Upgrade to a fixed version: zitadel 2.16.4, 2.17.3. Check the vendor advisory for mitigations.

References

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