---
id: "CVE-2026-80095"
page: "https://infrastack.ai/live/CVE-2026-80095"
kind: "vulnerability"
aliases: ["CVE-2026-80095"]
title: "Microsoft SharePoint: cross-site scripting lets an attacker elevate privileges over the network"
severity: "critical"
cvss: 9.0
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["microsoft-office", "on-premises", "sharepoint", "vendor"]
not_affected_if: ["sharepoint-online-only"]
published_at: "2026-11-10T19:21:22+00:00"
first_seen_at: "2026-11-10T19:25:17+00:00"
updated_at: "2026-11-10T19:30:07+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80095", "first_seen_at": "2026-11-10T19:25:17+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-10T19:30:07+00:00"}]
exploit_sources: []
---

# Microsoft SharePoint: cross-site scripting lets an attacker elevate privileges over the network

Link for people: https://infrastack.ai/live/CVE-2026-80095 (this .md is for agents)

Microsoft Office SharePoint has a cross-site scripting flaw in how it builds web pages from user input. An attacker with a valid account can reach it over the network and gain higher privileges.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Confirm whether your organization runs on-premises Microsoft SharePoint Server (Office SharePoint) rather than only SharePoint Online.
- Check the installed build against the fixed versions in Microsoft's advisory for CVE-2026-80095; the sources here do not list affected version ranges.

## Timeline

- 2026-11-10T19:25:17+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-80095
- 2026-11-10T19:30:07+00:00 analyst — CVE published minutes ago; MSRC page is JS-only and returned nothing via web-cli, NVD fetch empty. No primary source read, so no versions, no fix, nothing verified. Revisit when MSRC/KB pages exist (support.microsoft.com KB pages list CVEs).

## From the sources

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_