CVE-2026-48562: Microsoft Office SharePoint Cross-Site Scripting

CVE-2026-48562 · Severity: medium · CVSS 4.6 · Published 2026-06-09

Microsoft Office SharePoint, a widely used collaboration and document management platform, is affected by a security vulnerability that could allow an attacker to perform spoofing. An authorized user on the network could trick another user into executing malicious scripts within their browser session. This could lead to unauthorized actions being performed on behalf of the victim or the exposure of sensitive information within the SharePoint environment.

Technologies: Microsoft SharePoint. Vendors: Microsoft.

Quick answers

Is CVE-2026-48562 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-48562 being exploited in the wild.
How severe is CVE-2026-48562?
Medium severity, with a CVSS score of 4.6, published 9 June 2026.
Which products and versions are affected?
Microsoft Office SharePoint.
Is there a fix for CVE-2026-48562?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-48562 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-48562?
Check whether you run Microsoft SharePoint. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

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 authenticated attacker with low privileges can exploit this by injecting malicious scripts into a SharePoint page. The attack requires a victim to interact with the affected page (User Interaction: Required). Successful exploitation allows the attacker to perform spoofing, potentially leading to the disclosure of sensitive information or unauthorized modifications within the context of the victim's session. The vulnerability is tracked as CVE-2026-48562 and has a CVSS 3.1 base score of 4.6.

Affected products

  • Microsoft Office SharePoint

Timeline

  • 2026-06-09: disclosed
  • 2026-06-09: advisory

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.