CVE-2025-5802Username Enumeration via Self Registration Flow in Multiple WSO2 Products Allows User Account Discovery
Updated under an hour ago ()
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It affects WSO2 API Manager and 9 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The self-registration flow accepts user-supplied input for usernames without adequately preventing the disclosure of username existence. When a user attempts to register with an existing username, the system responds with an error message that explicitly indicates the username is already in use. This behavior allows an attacker to discover valid usernames within the system. The discovery of valid usernames can facilitate subsequent attacks such as brute force, social engineering, and targeted phishing campaigns.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-203
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- WSO2
- NVD analysis
- Deferred
- Record last updated
- Sep 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
WSO2 WSO2 API Manager wso2:api_manager (from the name) | before 3.1.0 status unknown; from 3.1.0 before 3.1.0.354; from 3.2.0 before 3.2.0.458; from 3.2.0 before 3.2.0.478; from 3.2.1 before 3.2.1.96; from 4.0.0 before 4.0.0.379; from 4.1.0 before 4.1.0.262; from 4.2.0 before 4.2.0.200; and 4 more ranges | CNA record |
WSO2 WSO2 API Control Plane wso2:api_control_plane (from the name) | before 4.5.0 status unknown; from 4.5.0 before 4.5.0.56; from 4.6.0 before 4.6.0.18 | CNA record |
WSO2 WSO2 Universal Gateway wso2:universal_gateway (from the name) | before 4.5.0 status unknown; from 4.5.0 before 4.5.0.55; from 4.6.0 before 4.6.0.17 | CNA record |
WSO2 WSO2 Traffic Manager wso2:traffic_manager (from the name) | before 4.5.0 status unknown; from 4.5.0 before 4.5.0.54; from 4.6.0 before 4.6.0.17 | CNA record |
WSO2 WSO2 Identity Server wso2:identity_server (from the name) | before 5.10.0 status unknown; from 5.10.0 before 5.10.0.383; from 5.11.0 before 5.11.0.430; from 6.0.0 before 6.0.0.257; from 6.1.0 before 6.1.0.234; from 6.1.0 before 6.1.0.257; from 7.0.0 before 7.0.0.133; from 7.1.0 before 7.1.0.41; and 1 more ranges | CNA record |
WSO2 WSO2 Identity Server as Key Manager wso2:identity_server_as_key_manager (from the name) | before 5.10.0 status unknown; from 5.10.0 before 5.10.0.374 | CNA record |
WSO2 WSO2 Open Banking AM wso2:open_banking_am (from the name) | before 2.0.0 status unknown; from 2.0.0 before 2.0.0.403 | CNA record |
WSO2 WSO2 Open Banking IAM wso2:open_banking_iam (from the name) | before 2.0.0 status unknown; from 2.0.0 before 2.0.0.423 | CNA record |
WSO2 WSO2 Carbon Identity Management Endpoint Util wso2:carbon_identity_management_endpoint_util (from the name) | from 5.17.5 before 5.17.5.332; from 5.18.187 before 5.18.187.330; from 5.23.8 before 5.23.8.213; from 5.25.92 before 5.25.92.167; from 7.0.78 before 7.0.78.162; from x not affected | CNA record |
WSO2 WSO2 Carbon Identity Application Authentication Framework wso2:carbon_identity_application_authentication_framework (from the name) | from 5.17.5 before 5.17.5.332; from 5.18.187 before 5.18.187.330; from x not affected | CNA record |
References
- https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4227/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.