WSO2 IdentityServer Magic Link Authenticator DoS via Uncontrolled Memory Growth
CVE-2025-10470 Published on May 11, 2026

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

Vendor Advisory NVD

Vulnerability Analysis

CVE-2025-10470 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
CHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Type

What is a Resource Exhaustion Vulnerability?

The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

CVE-2025-10470 has been classified to as a Resource Exhaustion vulnerability or weakness.


Products Associated with CVE-2025-10470

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Wso2 Identity Server
 
Wso2 Carbon Magiclink Authenticator Module
 

Affected Versions

WSO2 Identity Server: WSO2 Carbon MagicLink Authenticator Module:

Exploit Probability

EPSS
0.06%
Percentile
18.78%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.