CVE-2019-0957 Cross-site scripting in Microsoft SharePoint Enterprise Server
Attackers can escalate privileges by sending a specially crafted web request to Microsoft SharePoint Server due to improper sanitization.
- 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-2019-0957?
CVE-2019-0957 is a high-severity cross-site scripting vulnerability in Microsoft Sharepoint Enterprise Server, published on 16 May 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An elevation of privilege vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka 'Microsoft SharePoint Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0958.
Weakness: CWE-20
Which versions are affected by CVE-2019-0957?
It affects 2 products.
Products include Microsoft Sharepoint Enterprise Server, Microsoft Sharepoint Server.
How do I fix CVE-2019-0957?
No fix has been published for CVE-2019-0957 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-2019-0957 being exploited?
There is no known exploitation of CVE-2019-0957 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-j843-72rg-9g88.