CVE-2026-42897 1

Vulnerability (CVE)

CVE-2026-42897: Microsoft Exchange Server Cross-Site Scripting Vulnerability

Known Exploited Vulnerabilities CISA KEV Catalog May 15, 2026

Microsoft Exchange Server contains a cross-site scripting vulnerability during web page generation in Outlook Web Access and when certain interaction conditions are met, arbitrary JavaScript can be executed in the browser context.

Vulnerabilities & Patching