# CVE-2023-3540: SimplePHPscripts NewsLetter Script PHP URL Parameter preview.php cross site scripting

> Remote attackers can inject malicious scripts via URL parameters in the preview.php file of SimplePHPscripts NewsLetter Script.

- **Severity:** Low 3.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/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:** 7 Jul 2023
- **Updated:** 23 Oct 2024
- **Also known as:** GHSA-f96j-3cpc-x554

## What is CVE-2023-3540?

CVE-2023-3540 is a low-severity cross-site scripting vulnerability in SimplePHPscripts NewsLetter Script PHP, published on 7 Jul 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A vulnerability, which was classified as problematic, was found in SimplePHPscripts NewsLetter Script PHP 2.4. Affected is an unknown function of the file /preview.php of the component URL Parameter Handler. The manipulation leads to cross site scripting. It is possible to launch the attack remotely. The identifier of this vulnerability is VDB-233292.

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

## Which versions are affected by CVE-2023-3540?

It affects 1 product.


Products: Simplephpscripts Newsletter Script Php.

## How do I fix CVE-2023-3540?

No fix has been published for CVE-2023-3540 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-3540 being exploited?

There is no known exploitation of CVE-2023-3540 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-3540 and fix it if it is affected.

What it is: CVE-2023-3540 is a low-severity cross-site scripting vulnerability in SimplePHPscripts NewsLetter Script PHP, published on 7 Jul 2023. 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-2023-3540 in the wild and no public exploit code.

Affected product: SimplePHPscripts NewsLetter Script PHP. 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-2023-3540/ (Markdown: https://insights.sbomify.com/CVE-2023-3540/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-3540
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-3540
- OSV: https://osv.dev/vulnerability/CVE-2023-3540

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-3540/
Summaries are generated and may contain mistakes; the official description above is the record.