Executive brief
Microsoft Office SharePoint, a widely used platform for document management and team collaboration, is affected by a security vulnerability that could allow an attacker to perform spoofing. By tricking a user into interacting with a malicious link or page, an attacker could execute unauthorized scripts in the user's browser session. This could lead to the unauthorized access of sensitive information or the performance of actions on behalf of the user within the SharePoint environment.
Technical details
A cross-site scripting (XSS) vulnerability exists in Microsoft Office SharePoint due to improper neutralization of input during web page generation (CWE-79). An attacker can exploit this by sending a specially crafted request to a vulnerable SharePoint server. While the attack is delivered over the network, it requires user interaction, such as a victim clicking a malicious link. Successful exploitation allows the attacker to execute arbitrary script code in the context of the victim's browser, potentially leading to session hijacking or unauthorized data disclosure. The vulnerability is tracked as CVE-2026-47636 and has a CVSS 3.1 base score of 5.4.
Affected products
- Microsoft Office SharePoint
Timeline
- 2026-06-09: disclosed: Initial publication of the CVE record.
- 2026-06-09: advisory: Microsoft released the security update guide for this vulnerability.