Cross-site scripting in Microsoft SharePoint Server - CVE-2026-111297
Published: November 11, 2026
Vulnerability identifier: #VU164795
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-2026-111297
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 and potentially disclose sensitive information, modify data, or disrupt service availability.
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 supply crafted content and induce a victim to interact with it to execute scripts in the victim's browser, spoof content, and potentially compromise the confidentiality, integrity, and availability of resources accessible through the victim's session.
The Preview Pane is not an attack vector for this vulnerability.
Affected software
Microsoft SharePoint Server
How to mitigate CVE-2026-111297
Install security update from vendor's website.
Microsoft SharePoint Server - update to 16.0.20326.20278