CVE-2026-70332: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Microsoft SharePoint Online
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.
AI Analysis
Technical Summary
CVE-2026-70332 is a vulnerability in Microsoft SharePoint Online where improper input neutralization during web page generation enables cross-site scripting (CWE-79). This vulnerability can be exploited by an attacker without privileges or user interaction to perform spoofing attacks that compromise confidentiality, integrity, and availability of the affected system. The CVSS v3.1 base score is 9.6, indicating critical severity. An official fix has been released by Microsoft to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability allows an attacker to perform spoofing attacks remotely without privileges or user interaction, resulting in complete compromise of confidentiality, integrity, and availability of the affected SharePoint Online environment.
Mitigation Recommendations
An official fix is available for this vulnerability. It is strongly recommended to apply the vendor-provided patch promptly to remediate the issue. Since this is not a cloud service, the responsibility for patching lies with the customer or administrator managing the SharePoint Online deployment.
CVE-2026-70332: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Microsoft SharePoint Online
Description
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.
CVSS v3.1
Score 9.6critical
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-70332 is a vulnerability in Microsoft SharePoint Online where improper input neutralization during web page generation enables cross-site scripting (CWE-79). This vulnerability can be exploited by an attacker without privileges or user interaction to perform spoofing attacks that compromise confidentiality, integrity, and availability of the affected system. The CVSS v3.1 base score is 9.6, indicating critical severity. An official fix has been released by Microsoft to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability allows an attacker to perform spoofing attacks remotely without privileges or user interaction, resulting in complete compromise of confidentiality, integrity, and availability of the affected SharePoint Online environment.
Mitigation Recommendations
An official fix is available for this vulnerability. It is strongly recommended to apply the vendor-provided patch promptly to remediate the issue. Since this is not a cloud service, the responsibility for patching lies with the customer or administrator managing the SharePoint Online deployment.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-6599-vjfw-x4gh
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-70332"]
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
- Remediation Level
- official-fix
- State
- PUBLISHED
Threat ID: 6a757399bf8831d539d91a3f
Added to database: 08/07/2026, 05:56:41 UTC
Last enriched: 08/15/2026, 18:09:21 UTC
Last updated: 09/22/2026, 13:47:48 UTC
Views: 98
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