CVE-2025-66621
UNKNOWN
NVD
CVSS Score
0
Severity
UNKNOWN
Published
Nov 06, 2026
Vendor
unknown
Description
Apache James SASL OAuthBearer/XOAUTH2 prior versions 3.9.1 fails to validate correctly AUD claim of JWT payloads when introspection is not configured. This allows an attacker with valid credentials to access the mail server even if they are not authorized to do so. We recommend users to upgrade to non vulnerable version that forces explicit configuration of aud claims and forces introspection.