CVE-2025-10470

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

HIGH
8.6
CVSS Score
Published: May 11, 2026 at 10:16 AM UTC
Updated: October 14, 2026 at 01:10 PM UTC
2 products affected across 1 vendorIdentity ServerCarbon Magiclink Authenticator

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Severity
HIGH8.6
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

7.0.0 ≤ v < 7.0.0.1217.0.0
Affected range stops below 7.0.0.121, so it looks safe — our inference, not a vendor statement
1.1.22 ≤ v < 1.1.22.31.1.22
Affected range stops below 1.1.22.3, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 1.1.31 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.6HIGHWSO2
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-400

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