CVE-2026-64902: 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 16.0.19725.20522Patch KB5002893 - 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 16.0.5565.1001Patch KB5002906
Event History
Frequently Asked Questions
What is the severity of CVE-2026-64902?
The severity of CVE-2026-64902 is medium with a score of 4.6.
How do I fix CVE-2026-64902?
To mitigate CVE-2026-64902, ensure you implement the latest security updates for Microsoft SharePoint applications.
What systems are affected by CVE-2026-64902?
CVE-2026-64902 affects Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition, and Microsoft SharePoint Enterprise Server 2016.
What type of attack is associated with CVE-2026-64902?
CVE-2026-64902 is associated with a spoofing attack due to improper input neutralization during web page generation.
What does CVE-2026-64902 exploit?
CVE-2026-64902 exploits cross-site scripting (XSS) vulnerabilities in Microsoft SharePoint.