CVE-2026-4052

Privilege Escalation via Token Endpoint in WSO2 API Manager (APIM 4.x/IS as Resident Key Manager)

Published Nov 3, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
This issue only impacts deployments where WSO2 Identity Server is configured as a Resident Key Manager with database sharing. In such environments, a self-registered user may gain access to the System REST APIs of WSO2 API Manager by obtaining a token from the WSO2 Identity Server token endpoint.

Remediation

Vendor Solution

Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5212/#solution

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Wso2
Wso2 api Control Plane
Wso2 api Manager
Wso2 wso2 Api Control Plane
Wso2 wso2 Api Manager
Wso2 wso2 Identity Server Key Manager Connector
Vendors & Products Wso2
Wso2 api Control Plane
Wso2 api Manager
Wso2 wso2 Api Control Plane
Wso2 wso2 Api Manager
Wso2 wso2 Identity Server Key Manager Connector
Type Values Removed Values Added
Description This issue only impacts deployments where WSO2 Identity Server is configured as a Resident Key Manager with database sharing. In such environments, a self-registered user may gain access to the System REST APIs of WSO2 API Manager by obtaining a token from the WSO2 Identity Server token endpoint.
Title Privilege Escalation via Token Endpoint in WSO2 API Manager (APIM 4.x/IS as Resident Key Manager)
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
WSO2
Published
Updated
Nov 3, 2026, 8:08 PM
Reserved
Mar 12, 2026, 3:04 PM
Status
Awaiting Analysis
Published
Nov 3, 2026, 8:17 AM
Modified
Nov 3, 2026, 8:18 PM