CVE-2026-88208: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Microsoft SharePoint Server Subscription Edition
Description
CVE-2026-88208 is a medium severity cross-site scripting (XSS) vulnerability in Microsoft SharePoint Server Subscription Edition. It involves improper neutralization of input during web page generation, allowing an authorized attacker to perform spoofing over a network. The vulnerability affects versions from 16.0.0 up to but not including 16.0.20326.20190. An official fix is available from Microsoft.
CVSS v3.1
Score 4.6medium
Affected software
Microsoft
Microsoft SharePoint Server Subscription Edition
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-88208) in Microsoft SharePoint Server Subscription Edition is caused by improper neutralization of input during web page generation, classified as CWE-79 (Cross-site Scripting). An authorized attacker could exploit this flaw to perform spoofing attacks over a network. The issue affects versions >=16.0.0 and <16.0.20326.20190. Microsoft has published an official fix to address this vulnerability.
Potential Impact
The vulnerability allows an authorized attacker to conduct spoofing attacks via cross-site scripting, potentially leading to limited confidentiality and integrity impacts. There is no impact on availability. The CVSS 3.1 base score is 4.6 (medium severity), reflecting network attack vector, low complexity, required privileges, and user interaction.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the patch provided in the Microsoft Security Response Center advisory to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-09T22:01:13.385Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88208","vendor":"Microsoft"}]
Threat ID: 6ace856b2cdf04f656a003a9
Added to database: 10/13/2026, 19:24:27 UTC
Last enriched: 10/14/2026, 01:03:56 UTC
Last updated: 10/14/2026, 01:03:56 UTC
Views: 5
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