CVE-2026-42897
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.
Ver en NVDAnálisis
Microsoft Exchange Server is vulnerable to unauthenticated cross-site scripting which could lead to session hijacking or spoofing. While significant for organizations running self-hosted Exchange, it is a routine enterprise security update rather than a developer-centric emergency.
Severidad
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:NCWE-79CISA KEV
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS
Afecta
microsoft:exchange_serverDescripción técnica
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.