A cross-site scripting vulnerability exists in SQL Server MDS that could allow an attacker to inject a client-side script into the user's browser instance. The vulnerability is caused when the SQL Server MDS does not properly validate a request parameter on the SQL Server site. The script could spoof content, disclose information, or take any action that the user could take on the site on behalf of the targeted user.
To exploit the vulnerability, the user must click a specially crafted URL. In an email attack scenario, an attacker could send an email message containing the specially crafted URL to the user in an attempt to convince the user to click it.
The security update addresses the vulnerability by correcting how SQL Server MDS validates the request parameter.
## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Microsoft SQL Server 2016 for x64-based Systems (CU) | | [KB3194717](https://patchblox.com/security/data/fix/microsoft/kb3194717.md) | May 27, 2020 | | Microsoft | Microsoft SQL Server 2016 for x64-based Systems (GDR) | | [KB3194716](https://patchblox.com/security/data/fix/microsoft/kb3194716.md) | Nov 8, 2016 | --- Data as of 2026-11-11T13:47:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.