Unrated severityNVD Advisory· Published Jan 13, 2026· Updated Apr 1, 2026
Microsoft SharePoint Server Spoofing Vulnerability
CVE-2026-20959
Description
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.
Affected products
4(expand)+ 2 more
- (no CPE)
- (no CPE)range: 16.0.0
- (no CPE)range: 16.0.0
- Range: 16.0.0
Patches
Vulnerability mechanics
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20959mitrevendor-advisorypatch
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