JSON Web Token (JWT) Exposure in Log Files
35951
15 July 2025
15 July 2025
OPEN
HIGH
7.1 High -- CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVE-2025-6391
Brocade Security Advisory ID |
BSA-2025-3061 |
Component |
JSON Web Token |
|
|
CWE-532: Insertion of Sensitive Information into Log File.
Summary
Brocade ASCG before 3.3.0 logs JSON Web Tokens (JWT) in log files. An attacker with access to the log files can withdraw the unencrypted tokens with security implications, such as unauthorized access, session hijacking, and information disclosure.
Note: The vulnerability affects both Brocade ASCG base OS (OVA deployment) and Brocade ASCG standard deployments
Products Affected
Brocade ASCG versions before 3.3.0
Products Confirmed Not Affected
-
Brocade Fabric OS - [VEX Justification: Component_not_present]
-
Brocade SANnav - [VEX Justification: Component_not_present]
Solution
- Security update provided in Brocade ASCG 3.3.0
Credit
The issue was found during internal security testing
Revision History
Version |
Change |
Date |
1.0 |
Initial Publication |
Jul 15, 2025 |
Disclaimer
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