# CVE-2013-4341: Cross-site scripting in n/a

> Remote attackers can inject arbitrary web script or HTML via crafted blog links in RSS feeds, potentially leading to session hijacking or malicious actions.

- **Severity:** Medium 4.3 (`AV:N/AC:M/Au:N/C:N/I:P/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:** 16 Sep 2013
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-8wf8-rc66-c638

## What is CVE-2013-4341?

CVE-2013-4341 is a medium-severity cross-site scripting vulnerability in Moodle Moodle, published on 16 Sep 2013. 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

Multiple cross-site scripting (XSS) vulnerabilities in Moodle through 2.2.11, 2.3.x before 2.3.9, 2.4.x before 2.4.6, and 2.5.x before 2.5.2 allow remote attackers to inject arbitrary web script or HTML via a crafted blog link within an RSS feed.

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

## Which versions are affected by CVE-2013-4341?

It affects 1 product.


Products: Moodle Moodle.

## How do I fix CVE-2013-4341?

Upgrade to a fixed version.

## Is CVE-2013-4341 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2013-4341 exists.

Public exploit code:

- Moodle 2.3.8/2.4.5 - Multiple Vulnerabilities (exploitdb)
- Moodle Authenticated Spelling Binary RCE (metasploit)

## Other vulnerabilities in Moodle Moodle

- [CVE-2006-4935](https://insights.sbomify.com/CVE-2006-4935/): File upload in n/a (critical 10.0)
- [CVE-2006-4936](https://insights.sbomify.com/CVE-2006-4936/): Moodle does not properly validate module instance id (critical 10.0)
- [CVE-2004-2233](https://insights.sbomify.com/CVE-2004-2233/): Unknown "front page vulnerability with Moodle servers" for Moodle before 1.3.2 has unknown impact and attack vectors. (critical 10.0)
- [CVE-2004-2235](https://insights.sbomify.com/CVE-2004-2235/): Cross-site scripting in n/a (critical 10.0)
- [CVE-2004-2236](https://insights.sbomify.com/CVE-2004-2236/): Other in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-4341 and fix it if it is affected.

What it is: CVE-2013-4341 is a medium-severity cross-site scripting vulnerability in Moodle Moodle, published on 16 Sep 2013. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2013-4341 exists.

Affected product: Moodle Moodle. 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-2013-4341/ (Markdown: https://insights.sbomify.com/CVE-2013-4341/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-4341
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-4341
- OSV: https://osv.dev/vulnerability/CVE-2013-4341

---
From sbomify Insights: https://insights.sbomify.com/CVE-2013-4341/
Summaries are generated and may contain mistakes; the official description above is the record.