CVE-2026-47640

Microsoft SharePoint Server Spoofing Vulnerability

CVE-2026-47640 is fixed in 3 products on 1 platform, first by KB5002880, released June 9, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

4.6

Important

Exploitation

None reported

Exploitation Unlikely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0046

40th percentile

<p>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.</p>

Where it's fixed

Product	Fix	Released
Microsoft
Microsoft SharePoint Enterprise Server 2016	KB5002880	Jun 9, 2026
Microsoft SharePoint Server 2019	KB5002874	Jun 9, 2026
Microsoft SharePoint Server Subscription Edition	KB5002873	Jun 9, 2026

Details

Published
June 9, 2026
Weakness
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47640

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