CVE-2026-48560: CWE-502: Deserialization of Untrusted Data 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-2026-48560) affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0 and is classified under CWE-502 (Deserialization of Untrusted Data). The issue arises from improper input neutralization during web page generation, resulting in cross-site scripting that enables an authorized attacker to spoof network communications. The CVSS 3.1 base score is 5.4 (medium severity), with attack vector network, low attack complexity, requiring privileges, no user interaction, and impacts confidentiality and integrity. Microsoft has released an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this vulnerability to perform spoofing attacks over the network, potentially compromising confidentiality and integrity of data within the affected SharePoint environment. 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-2026-48560 to remediate this vulnerability.
CVE-2026-48560: CWE-502: Deserialization of Untrusted Data 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 5.4medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-48560) affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0 and is classified under CWE-502 (Deserialization of Untrusted Data). The issue arises from improper input neutralization during web page generation, resulting in cross-site scripting that enables an authorized attacker to spoof network communications. The CVSS 3.1 base score is 5.4 (medium severity), with attack vector network, low attack complexity, requiring privileges, no user interaction, and impacts confidentiality and integrity. Microsoft has released an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this vulnerability to perform spoofing attacks over the network, potentially compromising confidentiality and integrity of data within the affected SharePoint environment. 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-2026-48560 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-21T20:00:35.245Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48560","vendor":"Microsoft"}]
Threat ID: 6a284d0f8dd33fbd85665898
Added to database: 6/9/2026, 5:27:43 PM
Last enriched: 6/9/2026, 5:42:18 PM
Last updated: 6/10/2026, 4:14:46 AM
Views: 4
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