3.7

CVE-2025-13166

Username Enumeration via SMS OTP Flow in WSO2 Identity Server Allows User Account Discovery

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerWSO2
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Produkt WSO2 Identity Server
Default Statusunaffected
Version 7.1.0
Version < 7.1.0.40
Status affected
Version 7.2.0
Version < 7.2.0.2
Status affected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.22% 0.123
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
ed10eef1-636d-4fbe-9993-6890dfa878f8 3.7 2.2 1.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE-203 Observable Discrepancy

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4353/