CVE-2026-64922: 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 16.0.10417.20198Patch KB5002896 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.19725.20522Patch KB5002893 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5565.1001Patch KB5002906
Event History
Frequently Asked Questions
What is the severity of CVE-2026-64922?
The severity of CVE-2026-64922 is rated as medium with a score of 4.6.
How do I fix CVE-2026-64922?
To mitigate CVE-2026-64922, apply the latest security updates provided by Microsoft for SharePoint Server.
What type of vulnerability is CVE-2026-64922?
CVE-2026-64922 is categorized as a spoofing vulnerability due to improper input validation leading to cross-site scripting.
Who is affected by CVE-2026-64922?
CVE-2026-64922 affects users of Microsoft SharePoint Server 2019, SharePoint Server Subscription Edition, and SharePoint Enterprise Server 2016.
What can an attacker do with CVE-2026-64922?
An attacker exploiting CVE-2026-64922 can perform spoofing attacks, potentially misleading users over a network.