# CVE-2017-15809: Cross-site scripting in n/a

> Cross-site scripting vulnerability in phpMyFaq allows attackers to inject malicious scripts via crafted tags, potentially leading to session hijacking or code execution.

- **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:** No
- **Published:** 23 Oct 2017
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-4wcf-rvqr-8vvv

## What is CVE-2017-15809?

CVE-2017-15809 is a medium-severity cross-site scripting vulnerability in Phpmyfaq Phpmyfaq, published on 23 Oct 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

In phpMyFaq before 2.9.9, there is XSS in admin/tags.main.php via a crafted tag.

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

## Which versions are affected by CVE-2017-15809?

It affects 1 product.


Products: Phpmyfaq Phpmyfaq.

## How do I fix CVE-2017-15809?

No fix has been published for CVE-2017-15809 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-15809 being exploited?

There is no known exploitation of CVE-2017-15809 in the wild and no public exploit code.

## Other vulnerabilities in Phpmyfaq Phpmyfaq

- [CVE-2023-0310](https://insights.sbomify.com/CVE-2023-0310/): Cross-site Scripting (XSS) - Stored in thorsten/phpmyfaq (critical 9.8)
- [CVE-2022-4407](https://insights.sbomify.com/CVE-2022-4407/): Cross-site Scripting (XSS) - Reflected in thorsten/phpmyfaq (critical 9.8)
- [CVE-2017-11187](https://insights.sbomify.com/CVE-2017-11187/): Security feature bypass in n/a (critical 9.8)
- [CVE-2026-76213](https://insights.sbomify.com/CVE-2026-76213/): phpMyFAQ before 4.1.7 2FA Brute-Force via Session-Scoped Throttle (critical 9.1)
- [CVE-2026-76214](https://insights.sbomify.com/CVE-2026-76214/): phpMyFAQ before 4.1.7 WebAuthn Replay Attack via Challenge (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-15809 and fix it if it is affected.

What it is: CVE-2017-15809 is a medium-severity cross-site scripting vulnerability in Phpmyfaq Phpmyfaq, published on 23 Oct 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: There is no known exploitation of CVE-2017-15809 in the wild and no public exploit code.

Affected product: Phpmyfaq Phpmyfaq. 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-2017-15809/ (Markdown: https://insights.sbomify.com/CVE-2017-15809/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-15809
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-15809
- OSV: https://osv.dev/vulnerability/CVE-2017-15809

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-15809/
Summaries are generated and may contain mistakes; the official description above is the record.