Denial-of-Service via Magic Link Authentication in WSO2 Identity Server Allows Service Unavailability
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-400.
Summary
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.
Why it matters now
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
Remediation
- Fix · CNA WSO2 Identity Server (WSO2) Fixed in 7.0.0.121
- Fix · CNA WSO2 Carbon MagicLink Authenticator Module (WSO2) Fixed in 1.1.22.3, 1.1.31
Timeline
- 2026-10-02 Threatist record created from CVE-2025-10470
- 2026-10-03 Alias added: GHSA-3xrw-97cx-wwgf
References
More WSO2 Identity Server vulnerabilities
- 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
Sources
- CVE-2025-10470 · CVE Program
- CVE-2025-10470 · NVD
- FIRST EPSS
- GHSA-3xrw-97cx-wwgf · GitHub Advisory Database · CC BY 4.0
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