# CVE-2022-0834: Amelia <= 1.0.46 - Stored Cross Site Scripting via lastName

> Attackers can inject arbitrary web scripts via the lastName parameter in the Amelia WordPress plugin, executing code when users view the booking calendar.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Mar 2022
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-qcv2-jjq2-95wj

## What is CVE-2022-0834?

CVE-2022-0834 is a high-severity cross-site scripting vulnerability in ameliabooking Booking for Appointments and Events Calendar – Amelia, published on 23 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Amelia WordPress plugin is vulnerable to Cross-Site Scripting due to insufficient escaping and sanitization of the lastName parameter found in the ~/src/Application/Controller/User/Customer/AddCustomerController.php file which allows attackers to inject arbitrary web scripts onto a pages that executes whenever a user accesses the booking calendar with the date the attacker has injected the malicious payload into. This affects versions up to and including 1.0.46.

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

## Which versions are affected by CVE-2022-0834?

It affects 1 product.


Products: Wpamelia Amelia.

## How do I fix CVE-2022-0834?

No fix has been published for CVE-2022-0834 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-0834 being exploited?

There is no known exploitation of CVE-2022-0834 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-0834 and fix it if it is affected.

What it is: CVE-2022-0834 is a high-severity cross-site scripting vulnerability in ameliabooking Booking for Appointments and Events Calendar – Amelia, published on 23 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-0834 in the wild and no public exploit code.

Affected product: ameliabooking Booking for Appointments and Events Calendar – Amelia. 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-2022-0834/ (Markdown: https://insights.sbomify.com/CVE-2022-0834/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-0834
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-0834
- OSV: https://osv.dev/vulnerability/CVE-2022-0834

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-0834/
Summaries are generated and may contain mistakes; the official description above is the record.