# CVE-2018-7198: October CMS - RainLab Blog Plugin XSS

> Attackers can inject malicious HTML into the Add Posts page, leading to cross-site scripting attacks against users.

- **Severity:** Medium 6.1 (`CVSS:3.0/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:** Yes
- **Published:** 18 Feb 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-96mh-7xpr-qcgw

## What is CVE-2018-7198?

CVE-2018-7198 is a medium-severity cross-site scripting vulnerability in Octobercms October, published on 18 Feb 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

October CMS through 1.0.431 allows XSS by entering HTML on the Add Posts page.

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

## Which versions are affected by CVE-2018-7198?

2 open source packages ship an affected version, including rainlab/blog-plugin. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `rainlab/blog-plugin` | Packagist | All versions | 1.4.1 |
| `rainlab/blog-plugin` | Packagist | All versions | 1.4.1 |

Products: Octobercms October.

## How do I fix CVE-2018-7198?

Upgrade rainlab/blog-plugin to 1.4.1 or later.

## Is CVE-2018-7198 being exploited?

There is no known exploitation of CVE-2018-7198 in the wild and no public exploit code.

Public exploit code:

- October CMS < 1.0.431 - Cross-Site Scripting (exploitdb)

## 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-2018-7198 and fix it if it is affected.

What it is: CVE-2018-7198 is a medium-severity cross-site scripting vulnerability in Octobercms October, published on 18 Feb 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-2018-7198 in the wild and no public exploit code.

Affected packages and fixed versions:
- rainlab/blog-plugin (Packagist): affected all versions; fixed in 1.4.1
- rainlab/blog-plugin (Packagist): affected all versions; fixed in 1.4.1

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-2018-7198/ (Markdown: https://insights.sbomify.com/CVE-2018-7198/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-7198
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-7198
- OSV: https://osv.dev/vulnerability/CVE-2018-7198

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-7198/
Summaries are generated and may contain mistakes; the official description above is the record.