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CVE-2025-1396

Username Enumeration in Multiple WSO2 Products with Multi-Attribute Login Enabled

Published: Sep 26, 2025Updated: Oct 6, 2025 Sources: CVE List NVD GHSACWE-203
NVD MITRE
3.7CVSSLOW
EPSS Score
0.2%
Top 86.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-203

Affected Products

WSO2 Identity ServerWSO2
SaaSSecurity Product
Security Products / identity-access-mgmt
WSO2 Open Banking IAMWSO2
On-prem
Cloud & SaaS / api-gateway
WSO2 Identity Server as Key ManagerWSO2
On-premSecurity Product
Cloud & SaaS
org.wso2.carbon.identity.framework:org.wso2.carbon.identity.input.validation.mgtMavenOSS Libraries
identity serverwso2
On-premWeb App
Security Products / identity-access-mgmt
wso2commercialINCloud & SaaS
mavenpackage-ecosystemOSS Libraries
and 2 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Discovery
View detailed technique mapping

References

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2025/WSO2-2025-3983/
security.docs.wso2.com
https://nvd.nist.gov/vuln/detail/CVE-2025-1396
nvd.nist.gov
https://github.com/wso2/carbon-identity-framework/commit/5d5d592882a0377c12e19967c6272ccce0fb18ab
github.com
and 2 more references View all →

Timeline

Published
Sep 26, 2025
Last Updated
Oct 6, 2025

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