This vulnerability (CVE-2026-45468) affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0. It is categorized as CWE-79, indicating improper neutralization of input during web page generation, which leads to cross-site scripting. An authorized attacker could exploit this flaw to perform spoofing attacks over a network. The CVSS v3.1 base score is 4.6 (medium severity), with network attack vector, low attack complexity, requiring privileges and user interaction, and causing limited confidentiality and integrity impact. Microsoft has published an official fix for this vulnerability.

Exploitation of this vulnerability could allow an authorized attacker to conduct spoofing attacks by injecting malicious scripts into web pages generated by SharePoint. This may lead to limited confidentiality and integrity impacts, such as unauthorized disclosure or modification of information accessible to the user. There is no indication of availability impact or known exploits in the wild.

An official fix is available from Microsoft. Users of Microsoft SharePoint Enterprise Server 2016 version 16.0.0 should apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45468. Applying this update will remediate the vulnerability.