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CVE-2020-1101

Microsoft Office SharePoint XSS Vulnerability

MEDIUM
5.4
CVSS Score
Published: May 21, 2020 at 10:53 PM UTC
Updated: August 19, 2026 at 05:35 PM UTC
5 products affected across 1 vendorSharePoint ServerSharePoint Enterprise ServerSharePoint Foundation

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Severity
MEDIUM5.4
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

A cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka 'Microsoft Office SharePoint XSS Vulnerability'. This CVE ID is unique from CVE-2020-1099, CVE-2020-1100, CVE-2020-1106.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

SharePoint Enterprise Server· Microsoft
95%
2016
SharePoint Foundation· Microsoft
95%
15.0.0 ≤ v < publication15.0.02013 sp1
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
SharePoint Server· Microsoft
95%
2019
SharePoint Enterprise Server 2016· Microsoft
60%
16.0.0 ≤ v < publication16.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
SharePoint Server 2019· Microsoft
60%
16.0.0 ≤ v < publication16.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

PatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1101
Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1101

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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