Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2020-1106

CVE-2020-1106MEDIUM

Microsoft Office SharePoint XSS Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  C  L  L  N    6.1   .0398   90.2     —

AFFECTED
  Product                                              Versions  Fixed
  Microsoft SharePoint Enterprise Server 2016          16.0.0 –  —
  Microsoft SharePoint Foundation 2013 Service Pack 1  15.0.0 –  —
  Microsoft SharePoint Server 2019                     16.0.0 –  —

TIMELINE
  Nov 4   Reserved by microsoft
  May 21  Published (CNA: microsoft)
  Aug 19  EXPLOIT PUBLISHED — CVE-2020-1106 (Microsoft SharePoint Enterprise Server 2016). Public exploit reference added.
  Aug 19  RESCORED — CVE-2020-1106 (Microsoft SharePoint Enterprise Server 2016). CVSS 5.4 → 6.1 (NVD).

CWE-79 · CNA: microsoft · CVSS v3.1 · 3 references · NVD status: Modified

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. An authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected SharePoint server. The attacker who successfully exploited the vulnerability could then perform cross-site scripting attacks on affected systems and run script in the security context of the current user. The attacks could allow the attacker to read content that the attacker is not authorized to read, use the victim's identity to take actions on the SharePoint site on behalf of the user, such as change permissions and delete content, and inject malicious content in the browser of the user. The security update addresses the vulnerability by helping to ensure that SharePoint Server properly sanitizes web requests.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
November 4, 2019	Reserved	Reserved by microsoft
May 21, 2020	Published	Published (CNA: microsoft)
August 19, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2020-1106 (Microsoft SharePoint Enterprise Server 2016). Public exploit reference added.
August 19, 2026	RESCORED	RESCORED — CVE-2020-1106 (Microsoft SharePoint Enterprise Server 2016). CVSS 5.4 → 6.1 (NVD).

Affected

Affected products and packages — 3 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Microsoft	Microsoft SharePoint Enterprise Server 2016	—	16.0.0	—
Microsoft	Microsoft SharePoint Foundation 2013 Service Pack 1	—	15.0.0	—
Microsoft	Microsoft SharePoint Server 2019	—	16.0.0	—

Weaknesses

CWE-79

References (3)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1106
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1106 [Patch, Vendor Advisory]
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1106 [Exploit, Third Party Advisory]

Authoritative record: CVE-2020-1106 at cve.org

Vendors: microsoft

Weaknesses: CWE-79

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-1106 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.