CVE-2026-4052

CRITICALCVSS 9.8/10EPSS 0.36%

Last modified

CVE-2026-4052 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.36%

29.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
WSO2WSO2 API Manager4.1.0; 4.2.0; 4.3.0; 4.4.0; 4.5.0; 4.6.0
WSO2WSO2 API Control Plane4.5.0; 4.6.0
WSO2WSO2 Identity Server Key Manager Connector (apim-km-wso2is)< 1.8.8

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-4052?
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.
How severe is CVE-2026-4052?
CVE-2026-4052 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.
How do I fix CVE-2026-4052?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST