This security update resolves a cross-site-scripting (XSS) vulnerability that exists if Microsoft SharePoint Server does not correctly sanitize a specially crafted web request to an affected SharePoint server. This update also resolves a spoofing vulnerability that exists if Microsoft SharePoint Server does not correctly sanitize a specially crafted web request to an affected SharePoint server. To learn more about the vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2020-1100 and Microsoft Common Vulnerabilities and Exposures CVE-2020-1107.
Note To apply this security update, you must have the release version of Service Pack 1 for Microsoft SharePoint Server 2013 installed on the computer.
Improvements and fixes
This security update contains a fix for the following nonsecurity issue:
Image uploads fail in SharePoint Server 2013 site feeds when the SharePoint Server 2013 farm consumes a User Profile service application from a SharePoint Server 2016 farm.
How to get and install the update
Method 1: Microsoft Update
This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.
Method 2: Microsoft Update Catalog
To get the standalone package for this update, go to the Microsoft Update Catalog website.
Method 3: Microsoft Download Center
You can get the standalone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.
Security update deployment information
For deployment information about this update, see security update deployment information: May 12, 2020.
Security update replacement information
This security update replaces previously released security update 4484308.
File hash information
Information about protection and security
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