What’s Vulnerable › Vulnerabilities

CVE-2020-1456

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-07-14 · updated 2026-06-17
• Weakness: CWE-79

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 CVE ID is unique from CVE-2020-1450, CVE-2020-1451.

Affected products

• Microsoft SharePoint Server: 2013-sp1, 2016
• Microsoft SharePoint Server: 2010-sp2, 2019
• Microsoft SharePoint Server: 2016, 2013 Service Pack 1
• Microsoft SharePoint Server: 2019, 2010 Service Pack 2

References

• https://it-sec.de/ger/Aktuelles-Termine/it.sec-blog/it.sec-Research-Team-findet-unbekannte-Schwachstelle-in-Microsoft-Office-SharePoint
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1456
• https://slashcrypto.org/2021/01/15/CVE-2020-1456/
• https://it-sec.de/ger/Aktuelles-Termine/it.sec-blog/it.sec-Research-Team-findet-unbekannte-Schwachstelle-in-Microsoft-Office-SharePoint
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1456
• https://slashcrypto.org/2021/01/15/CVE-2020-1456/
• https://slashcrypto.org/2021/01/15/CVE-2020-1456/

Get alerted when CVE-2020-1456 or the next vulnerability affects your stack