Description
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.
Published: 2026-10-19
Score: 8.2 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4438/#solution

Tracking

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History

Mon, 19 Oct 2026 16:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Arbitrary Operations via SCIM Endpoints in Multiple WSO2 Products Enables User Account Takeover
First Time appeared Wso2
Wso2 wso2 Carbon Scim 2.0 Common Component
Wso2 wso2 Carbon Scim Common Component
Wso2 wso2 Identity Server
Wso2 wso2 Identity Server As Key Manager
Wso2 wso2 Open Banking Iam
Weaknesses CWE-281
CWE-668
CPEs cpe:2.3:a:wso2:wso2_carbon_scim_2.0_common_component:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_carbon_scim_common_component:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_identity_server:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_identity_server_as_key_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_open_banking_iam:*:*:*:*:*:*:*:*
Vendors & Products Wso2
Wso2 wso2 Carbon Scim 2.0 Common Component
Wso2 wso2 Carbon Scim Common Component
Wso2 wso2 Identity Server
Wso2 wso2 Identity Server As Key Manager
Wso2 wso2 Open Banking Iam
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N'}

Subscriptions

Wso2 Wso2 Carbon Scim 2.0 Common Component Wso2 Carbon Scim Common Component Wso2 Identity Server Wso2 Identity Server As Key Manager Wso2 Open Banking Iam
cve-icon MITRE

Status: PUBLISHED

Assigner: WSO2

Published:

Updated: 2026-10-19T16:40:26.522Z

Reserved: 2025-09-09T06:03:06.474Z

Link: CVE-2025-10149

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-281

    Improper Preservation of Permissions

  • CWE-668

    Exposure of Resource to Wrong Sphere