Server-Side Request Forgery (SSRF) in Microsoft SharePoint Server - CVE-2026-105713
Published: October 13, 2026
Vulnerability identifier: #VU154339
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-105713
CWE-ID: CWE-918
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose a user's NTLMv2 hash.
The vulnerability exists due to server-side request forgery in Microsoft Office SharePoint when performing server-side requests. A remote user can exploit this request forgery over an adjacent network to disclose a user's NTLMv2 hash.
The Preview Pane is not an attack vector.
Affected software
Microsoft SharePoint Server
How to mitigate CVE-2026-105713
Install security update from vendor's website.
Microsoft SharePoint Server - update to 16.0.20326.20190