CVE-2025-66621 | BDVDB-2026-400892 Detail

ApacheApache James

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.

Impact#

No impact statement in the source data.

Weaknesses#

CWE-345 Insufficient Verification of Data Authenticity

References#

https://lists.apache.org/thread.html/xz1g0blzcbxod69oktyq84h7t06xzov6
http://www.openwall.com/lists/oss-security/2026/11/06/13

Exploit#

No public exploit known

History#

Version 12026-11-06Record published in the CVE List.