CVE-2025-13736: Username Enumeration via Login Interface in Multiple WSO2 Products Allows User Account Discovery
WSO2 · WSO2 Identity Server as Key Manager
Vendor fix available · Affected: WSO2 Identity Server as Key Manager · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 19% of scored CVEs
DescriptionCVE.org
When Multi-Attribute Login is enabled, the login interface fails to consistently mask the existence of user accounts. For valid users, the server resolves and displays their canonical username, while for non-existent users, it echoes the original input. This occurs regardless of the validate_username configuration. The discovery of valid usernames can increase the risk of brute force attacks, social engineering attacks, and targeted information leakage. Attackers can leverage this information to craft more effective phishing campaigns or social engineering tactics to compromise user accounts or extract sensitive data.
Affected products5
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- WSO2 · WSO2 Identity Server as Key Managerfrom 5.10.0 before 5.10.0.371
- WSO2 · WSO2 Identity Serverfrom 5.10.0 before 5.10.0.380; from 5.11.0 before 5.11.0.427; from 6.0.0 before 6.0.0.254; from 6.1.0 before 6.1.0.255; from 7.0.0 before 7.0.0.132; from 7.1.0 before 7.1.0.40 and 1 more
- WSO2 · WSO2 Open Banking AMfrom 2.0.0 before 2.0.0.400
- WSO2 · WSO2 API Managerfrom 3.1.0 before 3.1.0.351; from 3.2.0 before 3.2.0.455; from 4.0.0 before 4.0.0.375
- WSO2 · WSO2 Open Banking IAMfrom 2.0.0 before 2.0.0.420
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- WSO2
- Published
- August 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2025-13736 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.