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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-4052
StatePUBLISHED
AssignerWSO2
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-03 08:17:15 UTC
Updated2026-11-03 20:18:14 UTC
DescriptionThis 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from ed10eef1-636d-4fbe-9993-6890dfa878f8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.003600000 probability, percentile 0.298850000 (date 2026-11-03)

Problem Types: CWE-862 | CWE-862 CWE-862: Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1ed10eef1-636d-4fbe-9993-6890dfa878f8Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA WSO2 WSO2 API Manager affected 4.1.0 custom Not specified
CNA WSO2 WSO2 API Manager affected 4.2.0 custom Not specified
CNA WSO2 WSO2 API Manager affected 4.3.0 custom Not specified
CNA WSO2 WSO2 API Manager affected 4.4.0 custom Not specified
CNA WSO2 WSO2 API Manager affected 4.5.0 custom Not specified
CNA WSO2 WSO2 API Manager affected 4.6.0 custom Not specified
CNA WSO2 WSO2 API Control Plane affected 4.5.0 custom Not specified
CNA WSO2 WSO2 API Control Plane affected 4.6.0 custom Not specified
CNA WSO2 WSO2 Identity Server Key Manager Connector Apim-km-wso2is affected 1.8.8 custom Not specified

References

ReferenceSourceLinkTags
security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO... ed10eef1-636d-4fbe-9993-6890dfa878f8 security.docs.wso2.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

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

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