# CVE-2020-1323: SharePoint Open Redirect Vulnerability

CVE-2020-1323 is fixed in 3 products on 1 platform, first by KB4484402, released June 9, 2020. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2020-1323
- Priority: High
- CVSS: n/a (Important)
- EPSS: 0.0219
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Jun 9, 2020
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1323

## Description

<p>An open redirect vulnerability exists in Microsoft SharePoint that could lead to spoofing.</p> <p>To exploit the vulnerability, an attacker could send a link that has a specially crafted URL and convince the user to click the link. When an authenticated SharePoint user clicks the link, the authenticated user's browser session could be redirected to a malicious site that is designed to impersonate a legitimate website. By doing so, the attacker could trick the user and potentially acquire sensitive information, such as the user's credentials.</p> <p>The update addresses the vulnerability by correcting how SharePoint handles open redirect requests.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 |  | [KB4484402](https://patchblox.com/security/data/fix/microsoft/kb4484402.md) | Jun 9, 2020 |
| Microsoft | Microsoft SharePoint Foundation 2013 Service Pack 1 |  | [KB4484409](https://patchblox.com/security/data/fix/microsoft/kb4484409.md) | Jun 9, 2020 |
| Microsoft | Microsoft SharePoint Server 2019 |  | [KB4484400](https://patchblox.com/security/data/fix/microsoft/kb4484400.md) | Jun 9, 2020 |

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Data as of 2026-11-08T00:53:09Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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