CVE-2025-13166 (GCVE-0-2025-13166)

Vulnerability from cvelistv5 – Published: 2026-09-15 09:53 – Updated: 2026-09-15 22:15
VLAI
Title
Username Enumeration via SMS OTP Flow in WSO2 Identity Server Allows User Account Discovery
Summary
The SMS OTP flow fails to adequately handle error messages, allowing an attacker to infer the existence of registered user accounts based on the responses received during the OTP initiation process. This weakness can be exploited by an attacker to discover valid usernames within the system. The impact is amplified for accounts that have not configured a mobile number, as the enumeration is specifically tied to this condition. The discovery of these usernames can facilitate subsequent brute force attacks, social engineering attempts, and information leakage, potentially leading to reputational damage, loss of customer trust, and regulatory non-compliance.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 12:43 UTC
CWE
  • CWE-203 - Information Exposure Through Predictable Error Conditions
Assigner
WSO2 CNA under the mitre root
CNA scorecard B 89/100 over 40 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
WSO2 WSO2 Identity Server Affected: 7.1.0 , < 7.1.0.40 (custom)
Affected: 7.2.0 , < 7.2.0.2 (custom)
    cpe:2.3:a:wso2:wso2_identity_server:*:*:*:*:*:*:*:*
    cpe:2.3:a:wso2:wso2_identity_server:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
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