# CVE-2017-6511: Cross-site scripting in n/a

> Reflected XSS in FineCMS allows attackers to inject malicious scripts via the action parameter, potentially leading to session hijacking or code execution.

- **Severity:** Medium 6.1 (`CVSS:3.1/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:** No
- **Published:** 7 Mar 2017
- **Updated:** 5 May 2025
- **Also known as:** GHSA-p23r-wwxc-q73r

## What is CVE-2017-6511?

CVE-2017-6511 is a medium-severity cross-site scripting vulnerability in n/a, published on 7 Mar 2017. 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

andrzuk/FineCMS before 2017-03-06 is vulnerable to a reflected XSS in index.php because of missing validation of the action parameter in application/classes/application.php.

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

## Which versions are affected by CVE-2017-6511?

It affects 1 product.


Products: Finecms Project Finecms.

## How do I fix CVE-2017-6511?

No fix has been published for CVE-2017-6511 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-6511 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-6511 exists.

## Other vulnerabilities in n/a

- [CVE-2017-12774](https://insights.sbomify.com/CVE-2017-12774/): SQL injection in n/a (critical 9.8)
- [CVE-2017-11167](https://insights.sbomify.com/CVE-2017-11167/): Code injection in n/a (critical 9.8)
- [CVE-2017-10968](https://insights.sbomify.com/CVE-2017-10968/): Code injection in n/a (critical 9.8)
- [CVE-2017-11200](https://insights.sbomify.com/CVE-2017-11200/): SQL injection in n/a (high 8.8)
- [CVE-2017-11178](https://insights.sbomify.com/CVE-2017-11178/): File upload in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-6511 and fix it if it is affected.

What it is: CVE-2017-6511 is a medium-severity cross-site scripting vulnerability in n/a, published on 7 Mar 2017. 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-2017-6511 exists.

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-2017-6511/ (Markdown: https://insights.sbomify.com/CVE-2017-6511/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-6511
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-6511
- OSV: https://osv.dev/vulnerability/CVE-2017-6511

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-6511/
Summaries are generated and may contain mistakes; the official description above is the record.