CVE-2026-45479: 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-2026-45479) 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, which leads to cross-site scripting (XSS). An authorized attacker could exploit this to perform spoofing attacks over a network. The CVSS v3.1 base score is 4.6 (medium severity), with attack vector network, low attack complexity, requiring low privileges and user interaction. 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. This may lead to limited confidentiality and integrity impacts but does not affect availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible. Refer to the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45479 for detailed patch information and installation instructions.
CVE-2026-45479: 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-2026-45479) 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, which leads to cross-site scripting (XSS). An authorized attacker could exploit this to perform spoofing attacks over a network. The CVSS v3.1 base score is 4.6 (medium severity), with attack vector network, low attack complexity, requiring low privileges and user interaction. 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. This may lead to limited confidentiality and integrity impacts but does not affect availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible. Refer to the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45479 for detailed patch information and installation instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-12T16:07:22.616Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45479","vendor":"Microsoft"}]
Threat ID: 6a284cdc8dd33fbd85664d42
Added to database: 06/09/2026, 17:26:52 UTC
Last enriched: 07/29/2026, 21:56:47 UTC
Last updated: 07/31/2026, 21:26:44 UTC
Views: 54
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