CVE-2026-47634

Microsoft SharePoint Server Spoofing Vulnerability

State: Published
Severity: 7.3 High
Published: Jun 9, 2026
Updated: Sep 24, 2026
Reserved: May 19, 2026

Description

Improper neutralization of special elements in output used by a downstream component ('injection') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Affected Products

Product	Versions
Microsoft SharePoint Server 2019Microsoft	16.0.0 to before 16.0.10417.20153Affected
Microsoft SharePoint Server Subscription EditionMicrosoft	16.0.0 to before 16.0.19725.20384Affected

References

Microsoft SharePoint Server Spoofing Vulnerabilityvendor-advisorypatch

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