CVE-2026-47640: 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-2026-47640) affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0. It is classified as CWE-79, indicating improper neutralization of input during web page generation, leading to cross-site scripting. An authorized attacker could exploit this flaw to perform spoofing attacks over a network. The CVSS v3.1 base score is 4.6 (medium severity), with vector AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N, indicating network attack vector, low attack complexity, requiring low privileges and user interaction, with limited confidentiality and integrity impact and no availability impact. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation could allow an authorized attacker to conduct spoofing attacks by injecting malicious scripts into web pages generated by SharePoint, potentially leading to limited confidentiality and integrity impacts. There is no known exploitation in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47640 to remediate this vulnerability.
CVE-2026-47640: 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
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-47640) affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0. It is classified as CWE-79, indicating improper neutralization of input during web page generation, leading to cross-site scripting. An authorized attacker could exploit this flaw to perform spoofing attacks over a network. The CVSS v3.1 base score is 4.6 (medium severity), with vector AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N, indicating network attack vector, low attack complexity, requiring low privileges and user interaction, with limited confidentiality and integrity impact and no availability impact. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation could allow an authorized attacker to conduct spoofing attacks by injecting malicious scripts into web pages generated by SharePoint, potentially leading to limited confidentiality and integrity impacts. There is no known exploitation in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47640 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-19T20:12:27.070Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47640","vendor":"Microsoft"}]
Threat ID: 6a284cf08dd33fbd85665064
Added to database: 6/9/2026, 5:27:12 PM
Last enriched: 6/9/2026, 7:18:31 PM
Last updated: 6/10/2026, 6:18:55 AM
Views: 4
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