# CVE-2024-9872: Cross-site scripting in Online Booking & Scheduling Calendar for WordPress by vcita

> Authenticated subscribers can inject malicious scripts and modify settings due to missing capability checks in the vcita WordPress plugin.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/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:** 6 Dec 2024
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-2388-4xvj-fvq2

## What is CVE-2024-9872?

CVE-2024-9872 is a medium-severity cross-site scripting vulnerability in Online Booking & Scheduling Calendar for WordPress by vcita, published on 6 Dec 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The Online Booking & Scheduling Calendar for WordPress by vcita plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the vcita_save_user_data_callback() function in all versions up to, and including, 4.5.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject malicious web scripts and update settings.

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

## Which versions are affected by CVE-2024-9872?

It affects 1 product.


Products: Vcita Online Booking \& Scheduling Calendar.

## How do I fix CVE-2024-9872?

No fix has been published for CVE-2024-9872 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-9872 being exploited?

There is no known exploitation of CVE-2024-9872 in the wild and no public exploit code.

## Other vulnerabilities in Online Booking & Scheduling Calendar for WordPress by vcita

- [CVE-2025-54677](https://insights.sbomify.com/CVE-2025-54677/): File upload in Online Booking & Scheduling Calendar for WordPress by vcita (critical 9.1)
- [CVE-2024-5791](https://insights.sbomify.com/CVE-2024-5791/): Cross-site scripting in Online Booking & Scheduling Calendar for WordPress by vcita (high 7.2)
- [CVE-2023-2298](https://insights.sbomify.com/CVE-2023-2298/): Online Booking & Scheduling Calendar for WordPress by vcita <= 4.3.0 - Unauthenticated Stored Cross-Site Scripting (high 7.2)
- [CVE-2024-47638](https://insights.sbomify.com/CVE-2024-47638/): Cross-site scripting in Online Booking & Scheduling Calendar for WordPress by vcita (high 7.1)
- [CVE-2024-37262](https://insights.sbomify.com/CVE-2024-37262/): WordPress Online Booking & Scheduling Calendar plugin <= 4.4.2 - Reflected Cross Site Scripting (XSS) vulnerability (high 7.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-9872 and fix it if it is affected.

What it is: CVE-2024-9872 is a medium-severity cross-site scripting vulnerability in Online Booking & Scheduling Calendar for WordPress by vcita, published on 6 Dec 2024. 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-2024-9872 in the wild and no public exploit code.

Affected product: Online Booking & Scheduling Calendar for WordPress by vcita. 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-2024-9872/ (Markdown: https://insights.sbomify.com/CVE-2024-9872/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-9872
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-9872
- OSV: https://osv.dev/vulnerability/CVE-2024-9872

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From sbomify Insights: https://insights.sbomify.com/CVE-2024-9872/
Summaries are generated and may contain mistakes; the official description above is the record.