# CVE-2018-3771: statics-server Cross-site Scripting vulnerability

> An attacker can execute arbitrary scripts in the victim's browser by injecting an iframe into a filename displayed in the directory index.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 20 Jul 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-393x-fr59-r8fg

## What is CVE-2018-3771?

CVE-2018-3771 is a medium-severity cross-site scripting vulnerability in HackerOne statics-server, published on 20 Jul 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

An XSS in statics-server <= 0.0.9 can be used via injected iframe in the filename when statics-server displays directory index in the browser.

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

## Which versions are affected by CVE-2018-3771?

2 open source packages ship an affected version, including statics-server. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `statics-server` | npm | All versions to 0.0.9 | None |
| `statics-server` | npm | All versions to 0.0.9 | None |

Products: Statics-Server Project Statics-Server.

## How do I fix CVE-2018-3771?

No fix has been published for CVE-2018-3771 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-3771 being exploited?

There is no known exploitation of CVE-2018-3771 in the wild and no public exploit code.

## Other vulnerabilities in HackerOne statics-server

- [CVE-2019-15596](https://insights.sbomify.com/CVE-2019-15596/): Path Traversal in statics-server (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-3771 and fix it if it is affected.

What it is: CVE-2018-3771 is a medium-severity cross-site scripting vulnerability in HackerOne statics-server, published on 20 Jul 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-3771 in the wild and no public exploit code.

Affected packages and fixed versions:
- statics-server (npm): affected all versions up to 0.0.9; no fix listed
- statics-server (npm): affected all versions up to 0.0.9; no fix listed

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-2018-3771/ (Markdown: https://insights.sbomify.com/CVE-2018-3771/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-3771
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-3771
- OSV: https://osv.dev/vulnerability/CVE-2018-3771

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-3771/
Summaries are generated and may contain mistakes; the official description above is the record.