CVE-2026-45481: 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
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.19725.20384Patch KB5002873 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10417.20153Patch KB5002874 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5556.1005Patch KB5002880
Event History
Frequently Asked Questions
What is the severity of CVE-2026-45481?
The severity of CVE-2026-45481 is rated as high with a score of 7.3.
How do I fix CVE-2026-45481?
To fix CVE-2026-45481, apply the latest security updates provided by Microsoft for SharePoint Server.
What type of vulnerability is CVE-2026-45481?
CVE-2026-45481 is a spoofing vulnerability caused by improper neutralization of input during web page generation.
Which software is affected by CVE-2026-45481?
CVE-2026-45481 affects Microsoft SharePoint Server, SharePoint Server Subscription Edition, and SharePoint Server 2019.
Can CVE-2026-45481 allow an attacker to perform cross-site scripting?
Yes, CVE-2026-45481 allows an authorized attacker to exploit the vulnerability to perform spoofing, which could involve cross-site scripting.