CVE-2026-2053 (CVSS 8.3) — The WSO2 API Manager's message flow component, when processing WS-Addressing headers, does not sufficiently validate or restrict user-controlled input within these headers. This omission allows an att

A new vulnerability, CVE-2026-2053, has been published with a CVSS score of 8.3, indicating a high severity risk. The issue affects the WSO2 API Manager, specifically its message flow component, which fails to properly validate or restrict user-controlled input within WS-Addressing headers. This oversight could allow an attacker to exploit the system, potentially leading to unauthorized actions or data exposure. The vulnerability was published on June 26, 2026, and is documented in the National Vulnerability Database.

Organizations that deploy WSO2 API Manager, particularly those in financial services, healthcare, telecommunications, and public sector entities that rely on API gateways for secure data exchange, are directly affected. Any regulated entity using this platform for API management, especially under frameworks like GDPR, PSD2, or NIS2, should treat this as a priority due to the potential for data integrity or confidentiality breaches.

Compliance teams should immediately verify whether their organization uses WSO2 API Manager and assess exposure to this vulnerability. They should coordinate with IT security to apply any available patches or workarounds from WSO2, and ensure that incident response plans are updated to address potential exploitation. Additionally, teams should document this finding in their risk register and review any relevant regulatory reporting obligations, particularly if the system processes personal or sensitive data.