CVE-2025-10149: Arbitrary Operations via SCIM Endpoints in Multiple WSO2 Products Enables User Account Takeover

Severity: high (CVSS 8.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-19 · updated 2026-10-20
Weakness: CWE-281

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.

Affected products

WSO2 Identity Server: from 5.10.0 before 5.10.0.379; from 5.11.0 before 5.11.0.415; from 6.0.0 before 6.0.0.251; from 6.1.0 before 6.1.0.251; from 7.0.0 before 7.0.0.127; from 7.1.0 before 7.1.0.34 — fixed in 5.10.0.379, 5.11.0.415, 6.0.0.251, 6.1.0.251, 7.0.0.127, 7.1.0.34
WSO2 Carbon SCIM 2.0 Common Component: from 1.5.1 before 1.5.1.40; from 1.5.46 before 1.5.46.47 — fixed in 1.5.1.40, 1.5.46.47
WSO2 Carbon SCIM Common Component: from 5.6.0 before 5.6.0.1; from 5.6.1 before 5.6.1.2; from 5.7.0 before 5.7.0.3; from 5.7.1 before 5.7.1.1; from 5.7.7 before 5.7.7.1; from 5.7.8 before 5.7.8.1 — fixed in 5.6.0.1, 5.6.1.2, 5.7.0.3, 5.7.1.1, 5.7.7.1, 5.7.8.1
WSO2 Identity Server as Key Manager: from 5.10.0 before 5.10.0.370 — fixed in 5.10.0.370
WSO2 Open Banking IAM: from 2.0.0 before 2.0.0.419 — fixed in 2.0.0.419

How to fix

Upgrade to a fixed version: WSO2 Identity Server 5.10.0.379, 5.11.0.415, 6.0.0.251, 6.1.0.251; WSO2 Carbon SCIM 2.0 Common Component 1.5.1.40, 1.5.46.47; WSO2 Carbon SCIM Common Component 5.6.0.1, 5.6.1.2, 5.7.0.3, 5.7.1.1; WSO2 Identity Server as Key Manager 5.10.0.370; WSO2 Open Banking IAM 2.0.0.419. Check the vendor advisory for mitigations.

References

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4438/

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