Microsoft has disclosed a new security vulnerability impacting on-premise versions of Exchange Server that it said has come under active exploitation in the wild.
The vulnerability, tracked as CVE-2026-42897 (CVSS score: 8.1), has been described as a spoofing bug stemming from a cross-site scripting flaw. An anonymous researcher has been credited with discovering and reporting the issue.
“

Multiple cPanel Vulnerabilities Could Lead to Sensitive Resource Exposure
Multiple newly disclosed vulnerabilities in cPanel & WHM, including the critical CVE‑2026‑41940 authentication bypass bug and a cluster of May 2026 flaws, could allow attackers


