# CVE-2017-11775: Cross-site scripting in Microsoft SharePoint Enterprise Server

> An attacker can execute arbitrary scripts in the context of a SharePoint user's browser by sending a specially crafted request, potentially leading to session hijacking or data theft.

- **Severity:** Medium 5.4 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 13 Oct 2017
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-g5mf-9jgg-r5w7

## What is CVE-2017-11775?

CVE-2017-11775 is a medium-severity cross-site scripting vulnerability in Microsoft Sharepoint Enterprise Server, published on 13 Oct 2017. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Microsoft SharePoint Enterprise Server 2013 SP1 and Microsoft SharePoint Enterprise Server 2016 allow an attacker to exploit a cross-site scripting (XSS) vulnerability by sending a specially crafted request to an affected SharePoint server, due to how SharePoint Server sanitizes web requests, aka "Microsoft Office SharePoint XSS Vulnerability". This CVE ID is unique from CVE-2017-11777 and CVE-2017-11820.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2017-11775?

It affects 1 product.


Products: Microsoft Sharepoint Enterprise Server.

## How do I fix CVE-2017-11775?

No fix has been published for CVE-2017-11775 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-11775 being exploited?

There is no known exploitation of CVE-2017-11775 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Sharepoint Enterprise Server

- [CVE-2019-0604](https://insights.sbomify.com/CVE-2019-0604/): Microsoft SharePoint Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2023-24955](https://insights.sbomify.com/CVE-2023-24955/): Microsoft SharePoint Server Code Injection (high 7.2, exploited in the wild)
- [CVE-2025-49706](https://insights.sbomify.com/CVE-2025-49706/): Microsoft SharePoint Improper Authentication (medium 6.5, exploited in the wild)
- [CVE-2020-1210](https://insights.sbomify.com/CVE-2020-1210/): Microsoft SharePoint Remote Code Execution Vulnerability (critical 9.9)
- [CVE-2020-1595](https://insights.sbomify.com/CVE-2020-1595/): Microsoft SharePoint Remote Code Execution Vulnerability (critical 9.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-11775 and fix it if it is affected.

What it is: CVE-2017-11775 is a medium-severity cross-site scripting vulnerability in Microsoft Sharepoint Enterprise Server, published on 13 Oct 2017. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2017-11775 in the wild and no public exploit code.

Affected product: Microsoft Sharepoint Enterprise Server. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2017-11775/ (Markdown: https://insights.sbomify.com/CVE-2017-11775/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-11775
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-11775
- OSV: https://osv.dev/vulnerability/CVE-2017-11775

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-11775/
Summaries are generated and may contain mistakes; the official description above is the record.