Microsoft Exchange Server Cross-Site Scripting Vulnerability
High Listed in CISA KEV
Summary
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.
In-depth triage · Auto channel
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Affected products
- Microsoft:Microsoft
Sources
- CISA KEV DATABASE
Original Links
- https://nvd.nist.gov/vuln/detail/CVE-2026-42897 advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog kev
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-42897 reference
- https://learn.microsoft.com/en-us/exchange/plan-and-deploy/post-installation-tasks/security-best-practices/exchange-emergency-mitigation-service reference
Timeline
- kev_added CISA KEV
- kev_ingest CISA KEV