# CVE-2022-4034: Appointment Hour Booking <= 1.3.72 - CSV Injection

> Unauthenticated attackers can inject malicious formulas into booking data, leading to code execution when administrators export and open the CSV file.

- **Severity:** Medium 5.8 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L`)
- **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:** 29 Nov 2022
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-35hg-hj3j-7whc

## What is CVE-2022-4034?

CVE-2022-4034 is a medium-severity code injection vulnerability in codepeople Appointment Hour Booking – Booking Calendar, published on 29 Nov 2022. 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

The Appointment Hour Booking Plugin for WordPress is vulnerable to CSV Injection in versions up to, and including, 1.3.72. This makes it possible for unauthenticated attackers to embed untrusted input into content during booking creation that may be exported as a CSV file when a site's administrator exports booking details. This can result in code execution when these files are downloaded and opened on a local system with a vulnerable configuration.

Weakness: CWE-1236 (Improper Neutralization of Formula Elements in a CSV File)

## Which versions are affected by CVE-2022-4034?

It affects 1 product.


Products: Dwbooster Appointment Hour Booking.

## How do I fix CVE-2022-4034?

No fix has been published for CVE-2022-4034 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-4034 being exploited?

There is no known exploitation of CVE-2022-4034 in the wild and no public exploit code.

## Other vulnerabilities in codepeople Appointment Hour Booking – Booking Calendar

- [CVE-2022-4035](https://insights.sbomify.com/CVE-2022-4035/): Appointment Hour Booking <= 1.3.72 - Unauthenticated iFrame Injection via Appointment Form (high 7.2)
- [CVE-2019-13505](https://insights.sbomify.com/CVE-2019-13505/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2021-24712](https://insights.sbomify.com/CVE-2021-24712/): Appointment Hour Booking – WordPress Booking Plugin < 1.3.17 - Authenticated Stored XSS (medium 5.4)
- [CVE-2022-4036](https://insights.sbomify.com/CVE-2022-4036/): Appointment Hour Booking <= 1.3.72 - CAPTCHA Bypass (medium 5.3)
- [CVE-2022-1710](https://insights.sbomify.com/CVE-2022-1710/): Appointment Hour Booking < 1.3.56 - Admin+ Stored Cross-Site Scripting (medium 4.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-4034 and fix it if it is affected.

What it is: CVE-2022-4034 is a medium-severity code injection vulnerability in codepeople Appointment Hour Booking – Booking Calendar, published on 29 Nov 2022. 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-2022-4034 in the wild and no public exploit code.

Affected product: codepeople Appointment Hour Booking – Booking Calendar. 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-2022-4034/ (Markdown: https://insights.sbomify.com/CVE-2022-4034/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-4034
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-4034
- OSV: https://osv.dev/vulnerability/CVE-2022-4034

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-4034/
Summaries are generated and may contain mistakes; the official description above is the record.