CVE-2018-8426

Name: CVE-2018-8426
Creator: NVD / NIST
Published: 2018-09-13T00:29:02.943+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.25%

Last modified Jun 17, 2026

CVE-2018-8426 is a vulnerability of currently unknown severity. A cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft Office SharePoint XSS Vulnerability." This affects Microsoft SharePoint Server, Microsoft SharePoint.. EPSS estimates a 2.25% chance of exploitation in the next 30 days.

Description

A cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft Office SharePoint XSS Vulnerability." This affects Microsoft SharePoint Server, Microsoft SharePoint.

Metrics

EPSS Probability

2.25%

80.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions	Update
Microsoft	Sharepoint Enterprise Server 2013	All versions	Sp1
Microsoft	Sharepoint Enterprise Server 2016	All versions	—
Microsoft	Sharepoint Server 2010	All versions	Sp2

References

http://www.securityfocus.com/bid/105208Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041640Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8426Patch, Vendor Advisory
http://www.securityfocus.com/bid/105208Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041640Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8426Patch, Vendor Advisory

Timeline

Published: Sep 13, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-8426?

How severe is CVE-2018-8426?

Severity scoring for CVE-2018-8426 is pending analysis. The EPSS model estimates a 2.25% probability of exploitation in the next 30 days.

How do I fix CVE-2018-8426?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-8426?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST