Security Advisory WSO2-2025-4177¶
Published: 2026-05-03
Version: 1.0.0
Severity: Not Applicable
CVSS Score: Not Applicable
AFFECTED PRODUCTS¶
- WSO2 Identity Server: 7.1.0, 7.0.0, 6.1.0, 6.0.0, 5.11.0, 5.10.0
OVERVIEW¶
Essential Security Enhancement on SMS Resend Code validation.
DESCRIPTION¶
Due to the improper implementation of SMS code resend validation, SMS OTP can be resend upon the user request via API call even though the product is configured to disallow resend, by setting ResendEnable = false in authentication.authenticator.sms_otp.parameters of deployment.toml. This behavior does not directly impact the confidentiality, integrity or availability of the deployment. However, repeated SMS OTP resend attempts may lead to SMS Flooding or increase of SMS Gateway cost.
IMPACT¶
The implementation of these security enhancements significantly strengthens the overall protection and integrity of the product, mitigating potential vulnerabilities and ensuring a more robust defense against security threats.
SOLUTION¶
Community Users (Open Source)¶
Apply the relevant fixes to your product using the public fix(es) provided below.
If applying the fix or update is not feasible, migrate to the latest unaffected version of the respective WSO2 product(s).
Support Subscription Holders¶
Update your product to the specified update level, or to a higher update level, to mitigate the identified vulnerability.
Info
WSO2 Support Subscription Holders may use WSO2 Updates in order to apply the fix.
| Product Name | Product Version | Update Level |
|---|---|---|
| WSO2 Identity Server | 7.1.0 | 6 |
| WSO2 Identity Server | 7.0.0 | 130 |
| WSO2 Identity Server | 6.1.0 | 230 |
| WSO2 Identity Server | 6.0.0 | 253 |
| WSO2 Identity Server | 5.11.0 | 426 |
| WSO2 Identity Server | 5.10.0 | 379 |