CVE-2026-45465: Microsoft SharePoint Server Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized 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 16.0.10417.20153Patch KB5002874 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5556.1005Patch KB5002880 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.19725.20384Patch KB5002873
Event History
Frequently Asked Questions
What is the severity of CVE-2026-45465?
The severity of CVE-2026-45465 is rated as medium with a score of 5.4.
How do I fix CVE-2026-45465?
To fix CVE-2026-45465, apply the latest security updates provided by Microsoft for SharePoint Server.
What systems are affected by CVE-2026-45465?
CVE-2026-45465 affects Microsoft SharePoint Server, Microsoft SharePoint Server Subscription Edition, Microsoft SharePoint Enterprise Server 2016, and Microsoft SharePoint Server 2019.
What kind of vulnerability is CVE-2026-45465?
CVE-2026-45465 is classified as a spoofing vulnerability that arises from improper neutralization of input during web page generation.
Who can exploit CVE-2026-45465?
An authorized attacker can exploit CVE-2026-45465 to perform spoofing attacks over a network.