CVE-2026-55020

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.

CVSS v3 4.6 MEDIUM

4.6^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.1 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55020	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:microsoft:sharepoint_server:::::subscription:::*
	cpe:2.3:a:microsoft:sharepoint_server:2016::::enterprise:::
	cpe:2.3:a:microsoft:sharepoint_server:2019:::::::*

History

16 Jul 2026, 15:16

Type	Values Removed	Values Added
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55020 - Vendor Advisory, Patch~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55020 - Patch, Vendor Advisory

15 Jul 2026, 15:13

Type	Values Removed	Values Added
CPE		cpe:2.3:a:microsoft:sharepoint_server:::::subscription:::* cpe:2.3:a:microsoft:sharepoint_server:2019:::::::* cpe:2.3:a:microsoft:sharepoint_server:2016::::enterprise:::
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55020 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55020 - Vendor Advisory, Patch
First Time		Microsoft Microsoft sharepoint Server

14 Jul 2026, 18:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-14 18:18

Updated : 2026-07-16 15:16

NVD link : CVE-2026-55020

Mitre link : CVE-2026-55020

CVE.ORG link : CVE-2026-55020

JSON object : View

Products Affected

microsoft

sharepoint_server

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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