Security Advisory

CVE-2026-56668

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-10 17:46:25
Last updated 2026-07-14 13:40:35
Assigner GitHub_M
CVSS score 8.1
State PUBLISHED

Description

ZITADEL is an open source identity management platform. Prior to 4.15.3, ZITADEL's OAuth2 Token Exchange endpoint for urn:ietf:params:oauth:grant-type:token-exchange does not verify that the subject token belongs to the requesting client or that requested scopes remain within the original token's scopes, allowing a low-privilege token to be exchanged for elevated permissions at another application. This issue is fixed in version 4.15.3.