# JoomDOC (com_joomdoc) <= 4.0.5 - Reflected XSS

[Joomla Vulnerability Database](https://mysites.guru/vulnerabilities/)/CVE-2023-40657

CVE-2023-40657CVE published 14 December 2023

# JoomDOC (com\_joomdoc) <= 4.0.5 - Reflected XSS

ARTIO JoomDOC up to and including 4.0.5 is affected by a reflected XSS vulnerability (CVE-2023-40657).

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## Is my site affected?

- **Affected** - JoomDOC up to and including 4.0.5
- **Fixed in** - A release after 4.0.5
- **What to do** - Update JoomDOC to the newest release from the vendor. This flaw covers versions up to 4.0.5, so any later release is outside it.

[Check whether your sites are affected](https://mysites.guru/free-audit/)

## How severe CVE-2023-40657 is

The published CVE record has no CVSS score, so there is no vector to break down here. The mySites.guru rule has no severity rating of its own either, so the description above is the best guide to what the flaw allows.

## Timeline

1.  14 December 2023CVE-2023-40657 record published by its CNA

## Rule details

[CVE-2023-40657](https://mysites.guru/vulnerabilities/CVE-2023-40657/)

JoomDOC

Affected versions: ≤ 4.0.5

Full advisory: [nvd.nist.gov](https://nvd.nist.gov/vuln/detail/CVE-2023-40657)

## References

-   [CVE-2023-40657 on cve.org (the official CVE record)](https://www.cve.org/CVERecord?id=CVE-2023-40657)
-   [CVE-2023-40657 in the NIST National Vulnerability Database](https://nvd.nist.gov/vuln/detail/CVE-2023-40657)

## CVE-2023-40657 questions

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Which versions are affected by CVE-2023-40657?

[CVE-2023-40657](https://mysites.guru/vulnerabilities/CVE-2023-40657/) affects JoomDOC up to and including 4.0.5.

How do I fix CVE-2023-40657?

Update JoomDOC to the newest release from the vendor. This flaw covers versions up to 4.0.5, so any later release is outside it.

How severe is CVE-2023-40657?

The published CVE record has no CVSS score, and the mySites.guru rule has no severity rating of its own. Any affected version is still checked on every audit.

## Running an affected version on a site you manage?

A free audit tells you which of your Joomla and WordPress sites run an affected version, which are out of date, and which have not been backed up. No card required. If a site is already compromised, [fix.mysites.guru](https://fix.mysites.guru/) is a single fixed fee per incident, usually resolved the same day.

This check is part of the [mySites.guru Joomla vulnerability scanner](https://mysites.guru/joomla-vulnerability-scanner/), which reads every installed extension's version on each audit. Browse the rest of the [Joomla vulnerability database](https://mysites.guru/vulnerabilities/).

Rules current as of 14 October 2026.