7.3
High
CVE-2026-55126 Microsoft SharePoint Server Spoofing Vulnerability
Description
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
CVSS 3.1 detail
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:CExploitable remotely over the network, with an ordinary account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- Interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft SharePoint Enterprise Server 2016 16.0 | 16.0.0 → < 16.0.5561.1001 | 16.0.5561.1001 |
| Microsoft SharePoint Server 2019 16.0 | 16.0.0 → < 16.0.10417.20175 | 16.0.10417.20175 |
| Microsoft SharePoint Server Subscription Edition 16.0 | 16.0.0 → < 16.0.19725.20434 | 16.0.19725.20434 |
References
- Microsoft SharePoint Server Spoofing Vulnerability msrc.microsoft.com
Timeline
- Published
- Last modified
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