# CVE-2004-2363: Cross-site scripting in n/a

> Remote attackers can execute cross-site scripting attacks in PHPX by using hex-encoded tags to bypass input validation checks.

- **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:** No
- **Published:** 16 Aug 2005
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-rw32-jvhw-2fm9

## What is CVE-2004-2363?

CVE-2004-2363 is a medium-severity cross-site scripting vulnerability in n/a, published on 16 Aug 2005. 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

Validate-Before-Canonicalize vulnerability in the checkURI function in functions.inc.php in PHPX 3.0 through 3.2.6 allows remote attackers to conduct cross-site scripting (XSS) attacks via hex-encoded tags, which bypass the check for literal "<", ">", "(", and ")" characters, as demonstrated using the limit parameter to forums.php and a variety of other vectors.

## Which versions are affected by CVE-2004-2363?

It affects 1 product.


Products: Phpx Phpx.

## How do I fix CVE-2004-2363?

No fix has been published for CVE-2004-2363 yet. Limit exposure of the affected software until one is available.

## Is CVE-2004-2363 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2004-2363 exists.

Public exploit code:

- PHPX 3.x - Multiple Cross-Site Scripting Vulnerabilities (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2004-0249](https://insights.sbomify.com/CVE-2004-0249/): Auth bypass in n/a (critical 10.0)
- [CVE-2008-3489](https://insights.sbomify.com/CVE-2008-3489/): SQL injection in n/a (high 7.5)
- [CVE-2007-1550](https://insights.sbomify.com/CVE-2007-1550/): SQL injection in n/a (high 7.5)
- [CVE-2005-3968](https://insights.sbomify.com/CVE-2005-3968/): SQL injection in n/a (high 7.5)
- [CVE-2008-5000](https://insights.sbomify.com/CVE-2008-5000/): SQL injection in n/a (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-2363 and fix it if it is affected.

What it is: CVE-2004-2363 is a medium-severity cross-site scripting vulnerability in n/a, published on 16 Aug 2005. 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-2004-2363 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-2004-2363/ (Markdown: https://insights.sbomify.com/CVE-2004-2363/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-2363
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-2363
- OSV: https://osv.dev/vulnerability/CVE-2004-2363

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-2363/
Summaries are generated and may contain mistakes; the official description above is the record.