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TI-2024-00356 Aliases CVE-2024-0391GHSA-r9x2-mg2v-mq96

Username Enumeration via Email OTP Flow in Multiple WSO2 Products Allows User Account Discovery

Priority LOW 29CWE-204Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-204.

Summary

The check user account lock states feature within the email OTP flow fails to validate user input, allowing an attacker to infer the existence of registered user accounts. The discovery of valid usernames can increase the risk of brute-force and social engineering attacks. Attackers can leverage this information to craft targeted phishing campaigns or other malicious activities aimed at tricking users into divulging sensitive data, potentially damaging the organization's reputation and leading to regulatory non-compliance and financial consequences.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00184 8th percentileScored 2026-11-07
Fix Fixed WSO2 Identity Server (WSO2): 5.10.0.379, 5.11.0.426, 5.11.0.431 +3WSO2 Open Banking IAM (WSO2): 2.0.0.318+3 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
WSO2WSO2 Identity Server5.10.0 to before 5.10.0.379; 5.11.0 to before 5.11.0.426; 5.11.0 to before 5.11.0.431; 6.0.0 to before 6.0.0.253; 6.1.0 to before 6.1.0.254; 7.0.0 to before 7.0.0.1315.10.0.379, 5.11.0.426, 5.11.0.431, 6.0.0.253, 6.1.0.254, 7.0.0.131Patch availableCNA
WSO2WSO2 Open Banking IAM2.0.0 to before 2.0.0.3182.0.0.318Patch availableCNA
WSO2WSO2 Identity Server as Key Manager5.10.0 to before 5.10.0.2675.10.0.267Patch availableCNA
WSO2Email OTP Authenticator1.0.18 to before 1.0.18.71.0.18.7, 1.0.24Patch availableCNA
WSO2WSO2 Carbon Authenticator Library For EmailOTP4.1.0 to before 4.1.0.8; 4.1.4 to before 4.1.4.94.1.0.8, 4.1.4.9, 4.1.22Patch availableCNA
WSO2WSO2 Carbon Authenticator Library For EmailOTP3.0.5 to before 3.0.5.8; 3.0.24 to before 3.0.24.6; 3.0.26 to before 3.0.26.163.0.5.8, 3.0.24.6, 3.0.26.16Patch availableCNA
  • WSO2 Identity Server VendorWSO2 Affected 5.10.0 to before 5.10.0.379; 5.11.0 to before 5.11.0.426; 5.11.0 to before 5.11.0.431; 6.0.0 to before 6.0.0.253; 6.1.0 to before 6.1.0.254; 7.0.0 to before 7.0.0.131 Fixed in 5.10.0.379, 5.11.0.426, 5.11.0.431, 6.0.0.253, 6.1.0.254, 7.0.0.131 Patch available CNA
  • WSO2 Open Banking IAM VendorWSO2 Affected 2.0.0 to before 2.0.0.318 Fixed in 2.0.0.318 Patch available CNA
  • WSO2 Identity Server as Key Manager VendorWSO2 Affected 5.10.0 to before 5.10.0.267 Fixed in 5.10.0.267 Patch available CNA
  • Email OTP Authenticator VendorWSO2 Affected 1.0.18 to before 1.0.18.7 Fixed in 1.0.18.7, 1.0.24 Patch available CNA
  • WSO2 Carbon Authenticator Library For EmailOTP VendorWSO2 Affected 4.1.0 to before 4.1.0.8; 4.1.4 to before 4.1.4.9 Fixed in 4.1.0.8, 4.1.4.9, 4.1.22 Patch available CNA
  • WSO2 Carbon Authenticator Library For EmailOTP VendorWSO2 Affected 3.0.5 to before 3.0.5.8; 3.0.24 to before 3.0.24.6; 3.0.26 to before 3.0.26.16 Fixed in 3.0.5.8, 3.0.24.6, 3.0.26.16 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:*5.10.0 to before 5.10.0.379; 5.11.0 to before 5.11.0.426; 6.0.0 to before 6.0.0.253; 6.1.0 to before 6.1.0.254; 7.0.0 to before 7.0.0.131VulnerableWSO2
cpe:2.3:a:wso2:identity_server_as_key_manager:*:*:*:*:*:*:*:*5.10.0 to before 5.10.267VulnerableWSO2
cpe:2.3:a:wso2:open_banking_iam:*:*:*:*:*:*:*:*2.0.0 to before 2.0.0.318VulnerableWSO2
  • cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:* Versions 5.10.0 to before 5.10.0.379; 5.11.0 to before 5.11.0.426; 6.0.0 to before 6.0.0.253; 6.1.0 to before 6.1.0.254; 7.0.0 to before 7.0.0.131 Vulnerable ·WSO2
  • cpe:2.3:a:wso2:identity_server_as_key_manager:*:*:*:*:*:*:*:* Versions 5.10.0 to before 5.10.267 Vulnerable ·WSO2
  • cpe:2.3:a:wso2:open_banking_iam:*:*:*:*:*:*:*:* Versions 2.0.0 to before 2.0.0.318 Vulnerable ·WSO2

Remediation

  • Fix · CNA WSO2 Identity Server (WSO2) Fixed in 5.10.0.379, 5.11.0.426, 5.11.0.431, 6.0.0.253, 6.1.0.254, 7.0.0.131
  • Fix · CNA WSO2 Open Banking IAM (WSO2) Fixed in 2.0.0.318
  • Fix · CNA WSO2 Identity Server as Key Manager (WSO2) Fixed in 5.10.0.267
  • Fix · CNA Email OTP Authenticator (WSO2) Fixed in 1.0.18.7, 1.0.24
  • Fix · CNA WSO2 Carbon Authenticator Library For EmailOTP (WSO2) Fixed in 4.1.0.8, 4.1.4.9, 4.1.22
  • Fix · CNA WSO2 Carbon Authenticator Library For EmailOTP (WSO2) Fixed in 3.0.5.8, 3.0.24.6, 3.0.26.16

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-0391
  2. 2026-10-03 Alias added: GHSA-r9x2-mg2v-mq96

References

Advisory 1

  • TI-2022-11928 Certain WSO2 products allow unrestricted file upload with resultant remote code execution. KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-12002 A reflected XSS issue exists in the Management Console of several WSO2 products. CVSS 3.1MEDIUM 6.1
  • TI-2018-06290 WSO2 Identity Server before 5.5.0 has XSS via the dashboard, allowing attacks by low-privileged attackers. CVSS 3.0MEDIUM 5.4
  • TI-2025-13722 Account Takeover via Conditional Authentication Script Logic in Multiple WSO2 Products CVSS 3.1CRITICAL 9.4
  • TI-2025-09712 Potential Broken Access Control in Multiple WSO2 Products via System REST APIs CVSS 3.1CRITICAL 9.8
  • TI-2024-06413 Incorrect Authorization in Multiple WSO2 Products via Account Recovery SOAP Admin Service Leading to Account Takeover CVSS 3.1CRITICAL 9.8
See all 82 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences