Server-Side Request Forgery (SSRF) in Microsoft Agent Framework SDK - dotnet - CVE-2026-109485
Published: November 11, 2026
Vulnerability identifier: #VU165835
CSH Severity: Low
CVSS v4: 6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N]
CVE-ID: CVE-2026-109485
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to server-side request forgery in Microsoft 365 Agents SDK when handling network requests. A remote user can induce the server to make requests to unintended destinations to disclose sensitive information.
Affected software
Microsoft Agent Framework SDK - dotnet
How to mitigate CVE-2026-109485
Install security update from vendor's website.
Microsoft Agent Framework SDK - dotnet - update to 1.8.77