Server-Side Request Forgery (SSRF) in Microsoft SharePoint Server - CVE-2026-70251
Published: October 14, 2026
Vulnerability identifier: #VU154678
CSH Severity: Low
CVSS v4: 7.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-70251
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to server-side request forgery in Microsoft Office SharePoint when handling requests over a network. A remote user can induce server-side requests to escalate privileges.
Successful exploitation requires specific conditions, such as particular protocol settings or configurations. The Preview Pane is not an attack vector.
Affected software
Microsoft SharePoint Server
How to mitigate CVE-2026-70251
Install security update from vendor's website.
Microsoft SharePoint Server - update to 16.0.20326.20190