CVE-2026-4052: critical vulnerability in WSO2 API Manager
Privilege Escalation via Token Endpoint in WSO2 API Manager (APIM 4.x/IS as Resident Key Manager)
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.8epss 0.4%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
WSO2 · WSO2 API Control PlaneWSO2 · WSO2 API ManagerWSO2 · WSO2 Identity Server Key Manager Connector (apim-km-wso2is)Related CVEs — WSO2 API Manager
In the same product, most dangerous first.
CVE-2026-5430CRITICALAuthentication Bypass via JWT Algorithm Mismatch in Multiple WSO2 Products Allows Account TakeoverEPSS 22.4%KEVCVE-2024-7074MEDIUMAuthenticated Arbitrary File Upload in Multiple WSO2 Products via SOAP Admin Service Leading to Remote Code ExecutionEPSS 17.7%CVE-2025-2905CRITICALAn XML External Entity (XXE) vulnerability in Multiple WSO2 ProductsEPSS 1.3%CVE-2025-3125MEDIUMAuthenticated Arbitrary File Upload in Multiple WSO2 Products via CarbonAppUploader Admin Service Leading to Remote Code ExecutionEPSS 0.9%CVE-2025-5605MEDIUMAuthentication Bypass via URI Manipulation in Multiple WSO2 Products' Management Console Leading to Partial Information DisclosureEPSS 0.9%CVE-2025-10611CRITICALPotential Broken Access Control in Multiple WSO2 Products via System REST APIsEPSS 0.8%