CVE-2026-45453: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Microsoft SharePoint Enterprise Server 2016
CVE-2026-45453 is a cross-site scripting (XSS) vulnerability in Microsoft SharePoint Enterprise Server 2016. It involves improper neutralization of input during web page generation, allowing an authorized attacker to perform spoofing attacks over a network. The vulnerability has a medium severity rating with a CVSS score of 5. 4. An official fix is available from Microsoft.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-45453) 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 can exploit this flaw to conduct spoofing attacks over a network. The CVSS 3.1 vector indicates the attack requires network access with low complexity, no privileges, and user interaction. Confidentiality and integrity impacts are low, with no availability impact. Microsoft has published an official fix for this vulnerability.
Potential Impact
Exploitation of this vulnerability could allow an authorized attacker to perform spoofing attacks, potentially misleading users or systems by injecting malicious scripts. The impact on confidentiality and integrity is low, and 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 Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45453 to remediate this vulnerability.
CVE-2026-45453: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
CVE-2026-45453 is a cross-site scripting (XSS) vulnerability in Microsoft SharePoint Enterprise Server 2016. It involves improper neutralization of input during web page generation, allowing an authorized attacker to perform spoofing attacks over a network. The vulnerability has a medium severity rating with a CVSS score of 5. 4. An official fix is available from Microsoft.
CVSS v3.1
Score 5.4medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-45453) 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 can exploit this flaw to conduct spoofing attacks over a network. The CVSS 3.1 vector indicates the attack requires network access with low complexity, no privileges, and user interaction. Confidentiality and integrity impacts are low, with no availability impact. Microsoft has published an official fix for this vulnerability.
Potential Impact
Exploitation of this vulnerability could allow an authorized attacker to perform spoofing attacks, potentially misleading users or systems by injecting malicious scripts. The impact on confidentiality and integrity is low, and 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 Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45453 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-12T16:06:43.096Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45453","vendor":"Microsoft"}]
Threat ID: 6a284cd78dd33fbd85664bf8
Added to database: 6/9/2026, 5:26:47 PM
Last enriched: 6/9/2026, 10:28:00 PM
Last updated: 6/10/2026, 6:26:30 AM
Views: 4
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