CVE-2025-1396 json
Username Enumeration in Multiple WSO2 Products with Multi-Attribute Login Enabled
published 2025-09-26 13 mo ago modified 2026-10-18 21 d ago also GHSA-w82p-r9vw-4rg5 , EUVD-2025-31223
- cvss
- 3.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 16%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- WSO2 WSO2 Identity Server 5.10.0.346, 5.11.0.395, 6.0.0.231, 6.1.0.223
- WSO2 WSO2 Open Banking IAM 2.0.0.390
- WSO2 WSO2 Identity Server as Key Manager 5.10.0.339
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 13 mo ago
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.wso2.carbon.identity.framework:org.wso2.carbon.identity.input.validation.mgt | <=7.8.103 |
no fix listed |
Affected products
- WSO2 WSO2 Identity Server
- WSO2 WSO2 Open Banking IAM
- WSO2 WSO2 Identity Server as Key Manager
Classification
- Weakness
-
- CWE-203 Observable Discrepancy
References
-
github.com
/wso2/carbon-identity-framework/commit/5d5d592882a0377c12e19967c6272ccce0fb18ab
web
-
security.docs.wso2.com
/en/latest/security-announcements/security-advisories/2025/WSO2-2025-3983/
vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-1396
advisory
-
github.com
/wso2/carbon-identity-framework
package
-
security.docs.wso2.com
/en/latest/security-announcements/security-advisories/2025/WSO2-2025-3983
web
Sources
- CVE List CVE-2025-1396
- GitHub Advisory GHSA-w82p-r9vw-4rg5
- NVD CVE-2025-1396
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