# CVE-2018-6550: Cross-site scripting in n/a

> Cross-site scripting vulnerability in Monstra CMS allows attackers to inject malicious scripts via page titles, potentially leading to session hijacking or 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:** 2 Feb 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-69m3-46w2-grm4

## What is CVE-2018-6550?

CVE-2018-6550 is a medium-severity cross-site scripting vulnerability in n/a, published on 2 Feb 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

Monstra CMS through 3.0.4 has XSS in the title function in plugins/box/pages/pages.plugin.php via a page title to admin/index.php.

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

## Which versions are affected by CVE-2018-6550?

It affects 1 product.


Products: Monstra Monstra.

## How do I fix CVE-2018-6550?

No fix has been published for CVE-2018-6550 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-6550 being exploited?

There is no known exploitation of CVE-2018-6550 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-40940](https://insights.sbomify.com/CVE-2021-40940/): File upload in n/a (critical 9.8)
- [CVE-2021-36548](https://insights.sbomify.com/CVE-2021-36548/): File upload in n/a (critical 9.8)
- [CVE-2020-25414](https://insights.sbomify.com/CVE-2020-25414/): Code injection in n/a (critical 9.8)
- [CVE-2020-13384](https://insights.sbomify.com/CVE-2020-13384/): File upload in n/a (high 8.8)
- [CVE-2018-16608](https://insights.sbomify.com/CVE-2018-16608/): Missing authorization in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-6550 and fix it if it is affected.

What it is: CVE-2018-6550 is a medium-severity cross-site scripting vulnerability in n/a, published on 2 Feb 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-2018-6550 in the wild and no public exploit code.

Affected product: n/a. 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-2018-6550/ (Markdown: https://insights.sbomify.com/CVE-2018-6550/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-6550
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-6550
- OSV: https://osv.dev/vulnerability/CVE-2018-6550

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-6550/
Summaries are generated and may contain mistakes; the official description above is the record.