CVE-2026-26105
Cross-Site Scripting in Microsoft SharePoint Enables Network Spoofing
Publication date: 2026-03-10
Last updated on: 2026-03-13
Assigner: Microsoft Corporation
Description
Description
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | sharepoint_server | 2019 |
| microsoft | sharepoint_server | 2016 |
| microsoft | sharepoint_server | to 16.0.19725.20076 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a cross-site scripting (XSS) issue in Microsoft Office SharePoint. It occurs because the software improperly neutralizes input during web page generation, which means that malicious input is not correctly handled or sanitized.
As a result, an unauthorized attacker can exploit this flaw to perform spoofing attacks over a network.
How can this vulnerability impact me? :
This vulnerability can allow an attacker to perform spoofing attacks, which means they can impersonate legitimate users or services within the network.
The impact includes high confidentiality and integrity risks, as indicated by the CVSS score, potentially leading to unauthorized access to sensitive information or manipulation of data.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know