Path traversal in Microsoft SharePoint Server - CVE-2026-108452
Published: November 5, 2026
Vulnerability identifier: #VU159372
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-108452
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code on the SharePoint Server.
The vulnerability exists due to path traversal in Microsoft Office SharePoint when handling network requests. A remote user can exploit insufficient pathname restrictions as a Site Owner to execute arbitrary code on the SharePoint Server.
Affected software
Microsoft SharePoint Server
How to mitigate CVE-2026-108452
Install security update from vendor's website.
Microsoft SharePoint Server - update to 16.0.20326.20190