CVE-2026-26137 PUBLISHED

Microsoft 365 Copilot BizChat Elevation of Privilege Vulnerability

Assigner: microsoft
Reserved: 11.02.2026 Published: 19.03.2026 Updated: 20.03.2026

Server-side request forgery (ssrf) in Microsoft 365 Copilot's Business Chat allows an authorized attacker to elevate privileges over a network.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L/E:U/RL:O/RC:C
CVSS Score: 8.9

Product Status

Vendor Microsoft
Product Microsoft 365 Copilot's Business Chat
Versions
  • Version - is affected

References

Problem Types