CVE-2018-0917 Cross-site scripting in Microsoft SharePoint
Attackers can exploit improper sanitization of web requests in SharePoint to elevate privileges.
- 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-2018-0917?
CVE-2018-0917 is a high-severity cross-site scripting vulnerability in Microsoft Sharepoint Enterprise Server, published on 14 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Microsoft SharePoint Enterprise Server 2016 allows an elevation of privilege vulnerability to due how specially crafted web requests are sanitized, aka "Microsoft SharePoint Elevation of Privilege Vulnerability". This CVE is unique from CVE-2018-0909, CVE-2018-0910. CVE-2018-0911, CVE-2018-0912, CVE-2018-0913 CVE-2018-0914, CVE-2018-0915, CVE-2018-0916, CVE-2018-0921, CVE-2018-0923, CVE-2018-0944 and CVE-2018-0947.
Weakness: CWE-79
Which versions are affected by CVE-2018-0917?
It affects 1 product.
Products include Microsoft Sharepoint Enterprise Server.
How do I fix CVE-2018-0917?
No fix has been published for CVE-2018-0917 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-2018-0917 being exploited?
There is no known exploitation of CVE-2018-0917 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-r7gq-p7qv-9889.