# CVE-2023-4111: PHP Jabbers Bus Reservation System index.php cross site scripting

> Remote attackers can inject malicious scripts via the pickup_id parameter in the PHP Jabbers Bus Reservation System, potentially compromising user sessions.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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:** 3 Aug 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-4cgx-34q8-6h3x

## What is CVE-2023-4111?

CVE-2023-4111 is a medium-severity cross-site scripting vulnerability in PHP Jabbers Bus Reservation System, published on 3 Aug 2023. 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

A vulnerability was found in PHP Jabbers Bus Reservation System 1.1 and classified as problematic. Affected by this issue is some unknown functionality of the file /index.php. The manipulation of the argument index/pickup_id leads to cross site scripting. The attack may be launched remotely. VDB-235958 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

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

## Which versions are affected by CVE-2023-4111?

It affects 1 product.


Products: Phpjabbers Bus Reservation System.

## How do I fix CVE-2023-4111?

No fix has been published for CVE-2023-4111 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-4111 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4111 exists.

Public exploit code:

- PHPJabbers Bus Reservation System 1.1 - Cross-Site Scripting (nuclei): http/cves/2023/CVE-2023-4111.yaml

## Other vulnerabilities in PHP Jabbers Bus Reservation System

- [CVE-2023-53877](https://insights.sbomify.com/CVE-2023-53877/): Bus Reservation System 1.1 Multiple SQL Injection via pickup_id Parameter (critical 9.3)
- [CVE-2023-51319](https://insights.sbomify.com/CVE-2023-51319/): Code injection in n/a (high 8.8)
- [CVE-2023-51316](https://insights.sbomify.com/CVE-2023-51316/): Denial of service in n/a (high 7.5)
- [CVE-2023-51318](https://insights.sbomify.com/CVE-2023-51318/): Cross-site scripting in n/a (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4111 and fix it if it is affected.

What it is: CVE-2023-4111 is a medium-severity cross-site scripting vulnerability in PHP Jabbers Bus Reservation System, published on 3 Aug 2023. 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-2023-4111 exists.

Affected product: PHP Jabbers Bus Reservation System. 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-2023-4111/ (Markdown: https://insights.sbomify.com/CVE-2023-4111/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4111
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4111
- OSV: https://osv.dev/vulnerability/CVE-2023-4111

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4111/
Summaries are generated and may contain mistakes; the official description above is the record.