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 (CWE-79) in Microsoft SharePoint Enterprise Server 2016 (version 16.0.0) is caused by improper neutralization of input during web page generation, which can lead to cross-site scripting attacks. An attacker with authorized access could exploit this flaw to perform spoofing 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 privileges and user interaction, with limited confidentiality and integrity impact and no availability impact. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this XSS vulnerability to perform spoofing attacks over a network, potentially leading to limited confidentiality and integrity impacts. There is no impact on availability. No known exploits are reported 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 vendor-provided patch as detailed in the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45479 to remediate this vulnerability.
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
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-79) in Microsoft SharePoint Enterprise Server 2016 (version 16.0.0) is caused by improper neutralization of input during web page generation, which can lead to cross-site scripting attacks. An attacker with authorized access could exploit this flaw to perform spoofing 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 privileges and user interaction, with limited confidentiality and integrity impact and no availability impact. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this XSS vulnerability to perform spoofing attacks over a network, potentially leading to limited confidentiality and integrity impacts. There is no impact on availability. No known exploits are reported 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 vendor-provided patch as detailed in the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45479 to remediate this vulnerability.
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: 6/9/2026, 5:26:52 PM
Last enriched: 6/9/2026, 10:12:51 PM
Last updated: 6/10/2026, 5:00:00 AM
Views: 2
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