CVE-2026-55126: Microsoft SharePoint Server Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Other sources
Microsoft SharePoint Server Spoofing Vulnerability
— Microsoft
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-55126?
CVE-2026-55126 has a severity rating of high, specifically a score of 7.3.
How do I fix CVE-2026-55126?
The recommended fix for CVE-2026-55126 is to apply the available security patch provided by Microsoft.
What software is affected by CVE-2026-55126?
CVE-2026-55126 affects Microsoft SharePoint Server, Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server Subscription Edition, and Microsoft SharePoint Server 2019.
What kind of vulnerability is CVE-2026-55126?
CVE-2026-55126 is classified as a spoofing vulnerability due to improper neutralization of input, leading to potential cross-site scripting (XSS).
Can CVE-2026-55126 be exploited remotely?
Yes, CVE-2026-55126 can be exploited remotely as it allows an authorized attacker to perform spoofing over a network.