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CVE-2026-55020

MEDIUM

4.6

CVSS 3.1

Metadata

CVE ID: CVE-2026-55020
State: PUBLISHED
Assigner: microsoft
Reserved: 2026-06-16 14:12 UTC
Published: 2026-07-14 17:08 UTC
Last updated: 2026-07-14 19:40 UTC
Primary CWE: CWE-79
CWE-79: Improper Neutralization of Input During Web Page Gen…
Vendor / Product: Microsoft / Microsoft SharePoint Enterprise Server 2016
Sources: cve.org · NVD

Severity & Metrics

4.6 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C

Affected products (3)

Vendor	Product	Platform	Versions
Microsoft	Microsoft SharePoint Enterprise Server 2016	x64-based Systems	16.0.0 < 16.0.5561.1001
Microsoft	Microsoft SharePoint Server 2019	x64-based Systems	16.0.0 < 16.0.10417.20175
Microsoft	Microsoft SharePoint Server Subscription Edition	x64-based Systems	16.0.0 < 16.0.19725.20434

Weakness (CWE)

CWE	Source	Description
CWE-79	cna	CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS scores (1)

Score	Severity	Version	Source	Vector
4.6	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C

References (1)

Microsoft SharePoint Server Spoofing Vulnerability https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55020

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