# CVE-2023-54357: Joomla com_booking 2.4.9 Information Disclosure via Account Enumeration

> Unauthenticated attackers can enumerate user accounts and retrieve personal data via brute force requests in the Joomla com_booking component.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Jun 2026
- **Updated:** 23 Jun 2026
- **Also known as:** GHSA-xgqm-c7vm-24xf

## What is CVE-2023-54357?

CVE-2023-54357 is a high-severity vulnerability in Artio Joomla! com_booking component, published on 19 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Joomla com_booking component 2.4.9 contains an information disclosure vulnerability that allows unauthenticated attackers to enumerate user accounts by exploiting the getUserData function in the customer controller. Attackers can send GET requests to index.php with option=com_booking, controller=customer, task=getUserData, and an id parameter to retrieve user names, usernames, and email addresses through brute force enumeration.

Weakness: CWE-203 (Observable Discrepancy)

## Which versions are affected by CVE-2023-54357?

It affects 1 product.


Products: Artio Book It\!.

## How do I fix CVE-2023-54357?

No fix has been published for CVE-2023-54357 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-54357 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-54357 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-54357 and fix it if it is affected.

What it is: CVE-2023-54357 is a high-severity vulnerability in Artio Joomla! com_booking component, published on 19 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-54357 exists.

Affected product: Artio Joomla! com_booking component. 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-2023-54357/ (Markdown: https://insights.sbomify.com/CVE-2023-54357/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-54357
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-54357
- OSV: https://osv.dev/vulnerability/CVE-2023-54357

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-54357/
Summaries are generated and may contain mistakes; the official description above is the record.