CVE-2025-66621

INFO Priority: 0.00 BB Relevance: 0/100
Published: 2026-11-06 Modified: 2026-11-10 First seen: 2026-11-06 Status: pending_score

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.

Affected Software (3)

Bug Bounty Relevance

0 / 100

CVSS Score

Unscored

EPSS — Exploitation Probability

0.14%
Raw Score 0.001350
Percentile 3.1%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00135
2026-11-12
0.00135
2026-11-10
0.00135
2026-11-09
0.00135
2026-11-08
0.00135
2026-11-07
0.00135

Intelligence Sources

mitre ref →
nvd ref →