undici vulnerable to cross-user cache disclosure via same-origin redirect
CVE-2026-120474
Summary
Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Products covered
Microsoft 365 Copilot
Remediation
Separate remediation guidance was not included in the collected bulletin.
CVEs in this advisory 1
Updates
- Published by Microsoft Security Response Center
The publication date reported by the vendor.
- Added to SecurityAlert
We collected the advisory from the official source.
- Confirmed at the source
Our collector saw this advisory during a later source check.