# CVE-2018-1999008: Cross-site scripting in n/a

> Authenticated users with media permissions can inject malicious scripts via folder names in October CMS, potentially leading to code execution.

- **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:** 23 Jul 2018
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-c9g2-5qmq-gwc7

## What is CVE-2018-1999008?

CVE-2018-1999008 is a medium-severity cross-site scripting vulnerability in Octobercms October, published on 23 Jul 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

October CMS version prior to build 437 contains a Cross Site Scripting (XSS) vulnerability in the Media module and create folder functionality that can result in an Authenticated user with media module permission creating arbitrary folder name with XSS content. This attack appear to be exploitable via an Authenticated user with media module permission who can create arbitrary folder name (XSS). This vulnerability appears to have been fixed in build 437.

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

## Which versions are affected by CVE-2018-1999008?

It affects 1 product.


Products: Octobercms October.

## How do I fix CVE-2018-1999008?

No fix has been published for CVE-2018-1999008 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-1999008 being exploited?

There is no known exploitation of CVE-2018-1999008 in the wild and no public exploit code.

## Other vulnerabilities in Octobercms October

- [CVE-2021-32648](https://insights.sbomify.com/CVE-2021-32648/): October CMS Improper Authentication (high 8.2, exploited in the wild)
- [CVE-2021-3311](https://insights.sbomify.com/CVE-2021-3311/): October CMS Session ID not invalidated after logout (critical 9.8)
- [CVE-2017-1000194](https://insights.sbomify.com/CVE-2017-1000194/): October CMS File Upload Vulnerability (critical 9.8)
- [CVE-2017-1000196](https://insights.sbomify.com/CVE-2017-1000196/): Code injection in n/a (critical 9.8)
- [CVE-2017-1000197](https://insights.sbomify.com/CVE-2017-1000197/): Path traversal in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-1999008 and fix it if it is affected.

What it is: CVE-2018-1999008 is a medium-severity cross-site scripting vulnerability in Octobercms October, published on 23 Jul 2018. 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-2018-1999008 in the wild and no public exploit code.

Affected product: Octobercms October. 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-2018-1999008/ (Markdown: https://insights.sbomify.com/CVE-2018-1999008/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-1999008
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-1999008
- OSV: https://osv.dev/vulnerability/CVE-2018-1999008

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-1999008/
Summaries are generated and may contain mistakes; the official description above is the record.