PT-2026-57256 · Zitadel · Zitadel
CVE-2026-56668
·
Published
2026-07-10
·
Updated
2026-07-10
CVSS v3.1
8.1
High
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
ZITADEL versions prior to 4.15.3
Description
The OAuth2 Token Exchange endpoint for
urn:ietf:params:oauth:grant-type:token-exchange fails to verify if the subject token belongs to the requesting client or if the requested scopes are within the original token's scopes. This allows a token with low privileges to be exchanged for one with elevated permissions at another application.Recommendations
Update to version 4.15.3.
Exploit
Fix
Missing Authorization
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Weakness Enumeration
Related Identifiers
Affected Products
Zitadel