Cross-site scripting in Microsoft SharePoint Server - CVE-2026-110045
Published: November 10, 2026
Vulnerability identifier: #VU164759
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-110045
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to spoof web content, disclose sensitive information, and modify information accessible to a victim.
The vulnerability exists due to improper neutralization of input during web page generation in Microsoft Office SharePoint when rendering user-supplied content. A remote user can submit specially crafted input to execute script in a victim's browser when the victim interacts with the malicious content, enabling content spoofing and unauthorized access to or modification of information.
The Preview Pane is not an attack vector for this vulnerability.
Affected software
Microsoft SharePoint Server
How to mitigate CVE-2026-110045
Install security update from vendor's website.
Microsoft SharePoint Server - update to 16.0.20326.20278