# CVE-2023-36384: WordPress Booking Calendar Contact Form Plugin <= 1.2.40 is vulnerable to Cross Site Scripting (XSS)

> An unauthenticated attacker can execute arbitrary scripts in the victim's browser via the Booking Calendar Contact Form plugin.

- **Severity:** High 7.1 (`CVSS:3.1/AV:N/AC:L/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:** 18 Jul 2023
- **Updated:** 28 Apr 2026
- **Also known as:** GHSA-7hcv-h4hx-q5hg

## What is CVE-2023-36384?

CVE-2023-36384 is a high-severity cross-site scripting vulnerability in CodePeople Booking Calendar Contact Form, published on 18 Jul 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

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in CodePeople Booking Calendar Contact Form plugin <= 1.2.40 versions.

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

## Which versions are affected by CVE-2023-36384?

It affects 1 product.


Products: Booking Calendar Project Booking Calendar.

## How do I fix CVE-2023-36384?

No fix has been published for CVE-2023-36384 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-36384 being exploited?

There is no known exploitation of CVE-2023-36384 in the wild and no public exploit code.

## Other vulnerabilities in CodePeople Booking Calendar Contact Form

- [CVE-2022-1463](https://insights.sbomify.com/CVE-2022-1463/): Booking Calendar <= 9.1 - PHP Object Injection via Shortcode (high 8.8)
- [CVE-2018-20556](https://insights.sbomify.com/CVE-2018-20556/): SQL injection in n/a (high 8.8)
- [CVE-2018-5673](https://insights.sbomify.com/CVE-2018-5673/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2021-25040](https://insights.sbomify.com/CVE-2021-25040/): Booking Calendar < 8.9.2 - Reflected Cross-Site Scripting (medium 6.1)
- [CVE-2017-2151](https://insights.sbomify.com/CVE-2017-2151/): Cross-site scripting in Booking Calendar (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-36384 and fix it if it is affected.

What it is: CVE-2023-36384 is a high-severity cross-site scripting vulnerability in CodePeople Booking Calendar Contact Form, published on 18 Jul 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: There is no known exploitation of CVE-2023-36384 in the wild and no public exploit code.

Affected product: CodePeople Booking Calendar Contact Form. 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-2023-36384/ (Markdown: https://insights.sbomify.com/CVE-2023-36384/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-36384
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-36384
- OSV: https://osv.dev/vulnerability/CVE-2023-36384

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-36384/
Summaries are generated and may contain mistakes; the official description above is the record.