This vulnerability (CVE-2026-47636) affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0. It is classified as CWE-79, indicating improper neutralization of input during web page generation leading to cross-site scripting. An authorized attacker could exploit this flaw to perform spoofing attacks over a network. The CVSS 3.1 base score is 5.4 (medium severity), with network attack vector, low attack complexity, no privileges required, user interaction required, and impacts on confidentiality and integrity. Microsoft has released an official fix for this vulnerability as detailed in their security advisory.

Exploitation of this vulnerability could allow an authorized attacker to conduct cross-site scripting attacks, potentially leading to spoofing and limited disclosure or modification of information. There is no indication of impact on availability. No known exploits are reported in the wild at this time.

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 documented in the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47636 to remediate this vulnerability.