WSO2 Identity Server and API Manager: Unauthorized System REST API access (CVE-2026-4052)
WSO2 Identity Server configured as a Resident Key Manager with database sharing is susceptible to an authorization issue where self-registered users can obtain tokens to access System REST APIs in WSO2 API Manager.
CVE search metadata
CVE search record: CVE-2026-4052. Severity: critical. CVSS: 9.8. KEV: no. Product: Identity Server (Resident Key Manager configuration), API Manager. Brief: WSO2 Identity Server and API Manager: Unauthorized System REST API access (CVE-2026-4052). Brief link: https://feed.craftedsignal.io/briefs/2026-11-wso2-identity-server-cve-2026-4052/
Triage facts
Revision 1- Applicability
- Identity Server (Resident Key Manager configuration), API Manager
- Evidence
- Unknown
- Severity
- Critical
- Sources
- 1 public source
- Freshness
- Revision 1Nov 3, 09:57 UTC
- Vulnerabilities
- 1 CVE
- Source quality
- A2Roughly even chance
CVE-2026-4052 impacts WSO2 Identity Server deployments specifically configured as a Resident Key Manager with database sharing. In these 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.