CVE-2026-42897: Microsoft Exchange Server Cross-Site Scripting
Microsoft Exchange Server Cross-Site Scripting Vulnerability. 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.
- CISA KEV-listed (remediation due 2026-05-29)
- EPSS 7.9% (92.2% percentile)