---
id: CVE-2026-70332
title: Microsoft Office SharePoint Spoofing Vulnerability
summary: >-
  Improper neutralization of input during web page generation ('cross-site
  scripting') in Microsoft Office SharePoint allows an unauthorized attacker to
  perform spoofing over a network.
severity: critical
cvss: 9.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-79
vendor: Microsoft
product: Microsoft SharePoint Online
affected:
  - sharepoint_online -
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-08-07T15:35:19.447886Z'
published: '2026-08-06'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T19:39:06.120Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-70332'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70332'
    label: Microsoft Office SharePoint Spoofing Vulnerability
tags:
  - cve.org
epss: 0.00863
epssPercentile: 0.56803
ingestedAt: '2026-09-08T19:08:49.646Z'
---

## Overview

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

## Affected

- `sharepoint_online -`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.