# CVE-2015-6909: Cross-site scripting in n/a

> Remote attackers can inject arbitrary web script via torrent file names in Synology Download Station, requiring user interaction to execute.

- **Severity:** Medium 4.3 (`AV:N/AC:M/Au:N/C:N/I:P/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:** 11 Sep 2015
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-hqr8-89qv-3hxp

## What is CVE-2015-6909?

CVE-2015-6909 is a medium-severity cross-site scripting vulnerability in n/a, published on 11 Sep 2015. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Cross-site scripting (XSS) vulnerability in the "Create download task via file upload" feature in Synology Download Station before 3.5-2962 allows remote attackers to inject arbitrary web script or HTML via the name element in the Info dictionary in a torrent file.

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

## Which versions are affected by CVE-2015-6909?

It affects 1 product.


Products: Synology Download Station.

## How do I fix CVE-2015-6909?

No fix has been published for CVE-2015-6909 yet. Limit exposure of the affected software until one is available.

## Is CVE-2015-6909 being exploited?

There is no known exploitation of CVE-2015-6909 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-34809](https://insights.sbomify.com/CVE-2021-34809/): Command injection in Download Station (critical 9.9)
- [CVE-2021-34810](https://insights.sbomify.com/CVE-2021-34810/): Privilege escalation in Download Station (critical 9.9)
- [CVE-2017-11156](https://insights.sbomify.com/CVE-2017-11156/): File upload in Synology Download Station (high 7.8)
- [CVE-2021-33184](https://insights.sbomify.com/CVE-2021-33184/): Server-side request forgery in Synology Download Station (high 7.7)
- [CVE-2017-11149](https://insights.sbomify.com/CVE-2017-11149/): Server-side request forgery in Synology Download Station (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-6909 and fix it if it is affected.

What it is: CVE-2015-6909 is a medium-severity cross-site scripting vulnerability in n/a, published on 11 Sep 2015. 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-2015-6909 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-2015-6909/ (Markdown: https://insights.sbomify.com/CVE-2015-6909/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-6909
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-6909
- OSV: https://osv.dev/vulnerability/CVE-2015-6909

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-6909/
Summaries are generated and may contain mistakes; the official description above is the record.