Microsoft SharePoint Information Disclosure Vulnerability
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-352.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Microsoft SharePoint Foundation 2013 Service Pack 1 | 15.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 to before publication | publication | Patch available | CNA |
- Microsoft SharePoint Enterprise Server 2016 VendorMicrosoft Affected 16.0.0 to before publication Fixed in publication Patch available CNA
- Microsoft SharePoint Foundation 2013 Service Pack 1 VendorMicrosoft Affected 15.0.0 to before publication Fixed in publication Patch available CNA
- Microsoft SharePoint Server 2019 VendorMicrosoft Affected 16.0.0 to before publication Fixed in publication Patch available CNA
CPE configurations NVD · 3
Remediation
- Fix · CNA Microsoft SharePoint Enterprise Server 2016 (Microsoft) Fixed in publication
- Fix · CNA Microsoft SharePoint Foundation 2013 Service Pack 1 (Microsoft) Fixed in publication
- Fix · CNA Microsoft SharePoint Server 2019 (Microsoft) Fixed in publication
Timeline
- 2026-10-02 Threatist record created from CVE-2020-1103
- 2026-10-03 Alias added: GHSA-88wv-c32x-w3h7
References
More Microsoft Sharepoint Enterprise Server vulnerabilities
- TI-2019-00394 Improper input validation in Microsoft SharePoint Server KEVCVSS 3.1CRITICAL 9.8
- TI-2020-01112 A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and… KEVCVSS 3.1HIGH 7.8
- TI-2017-08774 Memory corruption in Microsoft Office KEVCVSS 3.1HIGH 7.8
- TI-2023-10439 Microsoft SharePoint Server Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 7.2
- TI-2023-08100 Microsoft Word Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
- TI-2025-31676 Microsoft SharePoint Server Spoofing Vulnerability KEVCVSS 3.1MEDIUM 6.5
Sources
- CVE-2020-1103 · CVE Program
- CVE-2020-1103 · NVD
- FIRST EPSS
- GHSA-88wv-c32x-w3h7 · GitHub Advisory Database · CC BY 4.0
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