SCIM Auth Bypass in WSO2 Identity Server Federated User Spoofing
CVE-2025-10149 Published on October 19, 2026

Arbitrary Operations via SCIM Endpoints in Multiple WSO2 Products Enables User Account Takeover
The SCIM endpoint does not sufficiently validate authorization for federated users when performing operations against the local user store. This occurs when a local and a federated user share the same username, allowing a federated user to perform actions intended for a local user, including arbitrary operations. A malicious actor authenticated as a federated user may perform arbitrary operations on local user accounts via the SCIM 2.0 or SCIM 1.1 endpoints when local and federated users share the same username. This could lead to user account takeover. Deployments that do not support user self-registration are considered medium severity.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2025-10149 can be exploited 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 a small impact on confidentiality, a high impact on integrity, and no impact on availability.

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

Weakness Types

Improper Preservation of Permissions

The software does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.

Exposure of Resource to Wrong Sphere

The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.


Products Associated with CVE-2025-10149

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Affected Versions

WSO2 Identity Server as Key Manager: WSO2 Open Banking IAM: WSO2 Identity Server: WSO2 Carbon SCIM Common Component: WSO2 Carbon SCIM 2.0 Common Component: