CVE-2025-66621
Apache James: SASL OAUTHBEARER do not validate aud in JWT payload if misconfigred
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-345 |
| Vendor | apache software foundation |
| Product | apache james |
| Published | Nov 6, 2026 |
Stay Ahead of the Next One
Get instant alerts for apache software foundation apache james
Be the first to know when new unknown vulnerabilities affecting apache software foundation apache james are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Apache Software Foundation / Apache James
3.9.0 < 3.9.1
References
Credits
The Apache James PMC would like to thanks Felix Auringer for this report