CVE-2025-10470

Denial-of-Service via Magic Link Authentication in WSO2 Identity Server Allows Service Unavailability

Published May 11, 2026 CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
Description
The Magic Link authentication flow accepts multiple invalid authentication requests without adequate rate limiting or resource control, leading to uncontrolled memory usage growth.

This vulnerability can result in a denial-of-service condition, causing service unavailability for deployments that utilize the Magic Link authenticator. The impact is limited to these specific deployments and requires repeated invalid authentication attempts to trigger.

Remediation

Vendor Solution

Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4469/#solution

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Wso2 identity Server
Vendors & Products Wso2 identity Server
Type Values Removed Values Added
Description The Magic Link authentication flow accepts multiple invalid authentication requests without adequate rate limiting or resource control, leading to uncontrolled memory usage growth. This vulnerability can result in a denial-of-service condition, causing service unavailability for deployments that utilize the Magic Link authenticator. The impact is limited to these specific deployments and requires repeated invalid authentication attempts to trigger.
Title Denial-of-Service via Magic Link Authentication in WSO2 Identity Server Allows Service Unavailability
First Time appeared Wso2
Wso2 wso2 Carbon Magiclink Authenticator Module
Wso2 wso2 Identity Server
Weaknesses CWE-400
CPEs cpe:2.3:a:wso2:wso2_carbon_magiclink_authenticator_module:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_identity_server:*:*:*:*:*:*:*:*
Vendors & Products Wso2
Wso2 wso2 Carbon Magiclink Authenticator Module
Wso2 wso2 Identity Server
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
WSO2
Published
Updated
May 11, 2026, 12:38 PM
Reserved
Sep 15, 2025, 8:51 AM
Status
Analyzed
Published
May 11, 2026, 12:16 PM
Modified
Oct 14, 2026, 1:10 PM