# CVE-2007-3498: HTML Purifier Cross-site Scripting vulnerability

> Remote attackers can inject arbitrary web script or HTML via unescaped print_r output in the configuration form, 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:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 29 Jun 2007
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-6fh7-fwqj-mv49

## What is CVE-2007-3498?

CVE-2007-3498 is a medium-severity cross-site scripting vulnerability in n/a, published on 29 Jun 2007. 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

Cross-site scripting (XSS) vulnerability in smoketests/configForm.php in HTML Purifier before 2.0.1 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors related to "unescaped print_r output."

## Which versions are affected by CVE-2007-3498?

2 open source packages ship an affected version, including ezyang/htmlpurifier. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `ezyang/htmlpurifier` | Packagist | All versions | 2.0.1 |
| `ezyang/htmlpurifier` | Packagist | All versions | 2.0.1 |

Products: Htmlpurifier Htmlpurifier.

## How do I fix CVE-2007-3498?

Upgrade ezyang/htmlpurifier to 2.0.1 or later.

## Is CVE-2007-3498 being exploited?

There is no known exploitation of CVE-2007-3498 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2010-4183](https://insights.sbomify.com/CVE-2010-4183/): HTML Purifier cross-site scripting (XSS) vulnerability (medium 4.3)
- [CVE-2010-2479](https://insights.sbomify.com/CVE-2010-2479/): HTML Purifier Cross-site Scripting (XSS) vulnerability (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-3498 and fix it if it is affected.

What it is: CVE-2007-3498 is a medium-severity cross-site scripting vulnerability in n/a, published on 29 Jun 2007. 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-2007-3498 in the wild and no public exploit code.

Affected packages and fixed versions:
- ezyang/htmlpurifier (Packagist): affected all versions; fixed in 2.0.1
- ezyang/htmlpurifier (Packagist): affected all versions; fixed in 2.0.1

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-2007-3498/ (Markdown: https://insights.sbomify.com/CVE-2007-3498/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-3498
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-3498
- OSV: https://osv.dev/vulnerability/CVE-2007-3498

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-3498/
Summaries are generated and may contain mistakes; the official description above is the record.