Vulnerability in Wso2 Identity Server
CVE-2025-1396
A username enumeration vulnerability exists in multiple WSO2 products when Multi-Attribute Login is enabled. In this configuration, the system returns a distinct "User does not exist" error message to the login form, regardless of the validate_username setting. This behavior allows malicious actors to determine which usernames exist in the system based on observable discrepancies in the application's responses. Exploitation of this vulnerability could aid in brute-force attacks, targeted phishing campaigns, or other social engineering techniques by confirming the validity of user identifiers within the system.
EPSS: 0.002 (14.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Wso2 Identity_server — versions 5.10.0, 5.11.0, 6.0.0
- Wso2 Identity_server_as_key_manager — versions 5.10.0
- Wso2 Open_banking_iam — versions 2.0.0
- Wso2 Identity Server — versions 0, 5.10.0, 5.11.0
- Wso2 Identity Server As Key Manager — versions 5.10.0
- Wso2 Open Banking Iam — versions 2.0.0
Weakness classification (CWE)
References
- ed10eef1-636d-4fbe-9993-6890dfa878f8 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-1396?
- CVE-2025-1396 is a low-severity vulnerability in Wso2 Identity Server, classified under Observable Discrepancy. CVSS score: 3.7/10. Published 2025-09-26.
- How severe is CVE-2025-1396?
- Low severity. CVSS v3 base score is 3.7 out of 10.