CVE-2026-47639: 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 unauthorized attacker to perform spoofing over a network.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-79, affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0. It arises from improper input neutralization during web page generation, enabling cross-site scripting attacks. Exploitation could allow an attacker to perform spoofing attacks over a network. The CVSS 3.1 base score is 5.4, indicating medium severity. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthorized attacker to conduct cross-site scripting attacks, leading to spoofing over a network. The confidentiality and integrity impacts are low, with no impact on availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users of Microsoft SharePoint Enterprise Server 2016 version 16.0.0 should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47639 to remediate this vulnerability.
CVE-2026-47639: 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 unauthorized attacker to perform spoofing over a network.
CVSS v3.1
Score 5.4medium
Affected software
Microsoft
Microsoft SharePoint Enterprise Server 2016
Microsoft
Microsoft SharePoint Server 2019
Microsoft
Microsoft SharePoint Server Subscription Edition
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-79, affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0. It arises from improper input neutralization during web page generation, enabling cross-site scripting attacks. Exploitation could allow an attacker to perform spoofing attacks over a network. The CVSS 3.1 base score is 5.4, indicating medium severity. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthorized attacker to conduct cross-site scripting attacks, leading to spoofing over a network. The confidentiality and integrity impacts are low, with no impact on availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users of Microsoft SharePoint Enterprise Server 2016 version 16.0.0 should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47639 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-2026-47639","vendor":"Microsoft"}]
Threat ID: 6a284cf08dd33fbd85665061
Added to database: 06/09/2026, 17:27:12 UTC
Last enriched: 08/14/2026, 13:48:47 UTC
Last updated: 09/14/2026, 22:01:34 UTC
Views: 75
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