CVE-2023-6836: WSO2 API Manager

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Multiple WSO2 products have been identified as vulnerable due to an XML External Entity (XXE) attack abuses a widely available but rarely used feature of XML parsers to access sensitive information.

Affected products

• WSO2 API Manager: up to and including 3.0.0
• WSO2 API Manager Analytics: version 2.2.0 only; version 2.5.0 only
• WSO2 API Microgateway: version 2.2.0 only
• WSO2 Enterprise Integrator: up to and including 6.6.0
• WSO2 Identity Server: version 5.4.0 only; version 5.4.1 only; version 5.5.0 only; version 5.6.0 only
• WSO2 Identity Server As Key Manager: version 5.0.0 only; version 5.6.0 only; version 5.7.0 only; version 5.9.0 only
• WSO2 Micro Integrator: version 1.0.0 only

Published 2023-12-15. Last modified 2026-06-17.