CVE-2020-1443 Cross-site scripting in Microsoft SharePoint Enterprise Server
Attackers can spoof content in Microsoft SharePoint via crafted web requests, potentially misleading users and bypassing security controls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-1443?
CVE-2020-1443 is a medium-severity cross-site scripting vulnerability in Microsoft Sharepoint Enterprise Server, published on 14 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A spoofing vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka 'Microsoft SharePoint Spoofing Vulnerability'.
Which versions are affected by CVE-2020-1443?
It affects 3 products.
Products include Microsoft Sharepoint Enterprise Server, Microsoft Sharepoint Foundation, Microsoft Sharepoint Server.
How do I fix CVE-2020-1443?
No fix has been published for CVE-2020-1443 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2020-1443 being exploited?
There is no known exploitation of CVE-2020-1443 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Sharepoint Enterprise Server
- CVE-2019-0604 Microsoft SharePoint Remote Code Execution
- CVE-2023-24955 Microsoft SharePoint Server Code Injection
- CVE-2025-49706 Microsoft SharePoint Improper Authentication
- CVE-2020-1210 Microsoft SharePoint Remote Code Execution Vulnerability
- CVE-2020-1595 Microsoft SharePoint Remote Code Execution Vulnerability
Sources
Also known as GHSA-w97w-4jr9-q2r8.