CVE-2026-64902: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Microsoft SharePoint Enterprise Server 2016
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-64902) is classified as CWE-79, indicating improper neutralization of input during web page generation in Microsoft SharePoint Enterprise Server 2016. An authorized attacker could exploit this flaw to perform spoofing attacks over a network by injecting malicious scripts. The CVSS 3.1 base score is 4.6 (medium severity), reflecting a network attack vector with low complexity, requiring privileges and user interaction, and resulting in low confidentiality and integrity impacts without availability impact. Microsoft has issued an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this vulnerability to conduct spoofing attacks via cross-site scripting, potentially misleading users or executing unauthorized scripts in the context of the affected SharePoint server. The impact is limited to low confidentiality and integrity loss with no availability impact.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64902 to remediate this vulnerability.
CVE-2026-64902: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
CVSS v3.1
Score 4.6medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-64902) is classified as CWE-79, indicating improper neutralization of input during web page generation in Microsoft SharePoint Enterprise Server 2016. An authorized attacker could exploit this flaw to perform spoofing attacks over a network by injecting malicious scripts. The CVSS 3.1 base score is 4.6 (medium severity), reflecting a network attack vector with low complexity, requiring privileges and user interaction, and resulting in low confidentiality and integrity impacts without availability impact. Microsoft has issued an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this vulnerability to conduct spoofing attacks via cross-site scripting, potentially misleading users or executing unauthorized scripts in the context of the affected SharePoint server. The impact is limited to low confidentiality and integrity loss with no availability impact.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64902 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-20T20:25:40.975Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64902","vendor":"Microsoft"}]
Threat ID: 6a7b582abf8831d5391562fe
Added to database: 08/11/2026, 17:13:14 UTC
Last enriched: 08/11/2026, 20:28:19 UTC
Last updated: 08/12/2026, 01:01:03 UTC
Views: 3
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