# CommentBox (com_commentbox) <= 1.1.0 - Stored XSS

[Joomla Vulnerability Database](https://mysites.guru/vulnerabilities/)/CVE-2025-54298

CVE-2025-54298CriticalCVSS 9.4CVE published 28 July 2025

# CommentBox (com\_commentbox) <= 1.1.0 - Stored XSS

CommentBox (versions 1.0.0-1.1.0) is affected by a stored XSS vulnerability (CVE-2025-54298).

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## Is my site affected?

- **Affected** - CommentBox up to and including 1.1.0
- **Fixed in** - A release after 1.1.0
- **What to do** - Update CommentBox to the newest release from the vendor. This flaw covers versions up to 1.1.0, so any later release is outside it.

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

## How CVE-2025-54298 is scored

The base metrics as Joomla CNA published them, and what each one means for a site running an affected version. Threat and environmental metrics are left out: they describe a moment or a particular install rather than the flaw.

9.4 Critical

CVSS 4.0, scored by Joomla CNA

`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H`

### How it is reached

- **AV:N Attack vector** - Network. Reachable across the internet
- **AC:L Attack complexity** - Low. Nothing to work around, it just works
- **AT:N Attack requirements** - None. Works against any affected install
- **PR:N Privileges required** - None. No account needed
- **UI:P User interaction** - Passive. Someone has to visit a page

### What it does to the site

- **VC:H Confidentiality** - High. Everything the site holds can be read
- **VI:H Integrity** - High. Data and files can be altered at will
- **VA:N Availability** - None. The site stays up

### What it does beyond the site

- **SC:H Confidentiality** - High. Data on other systems can be read
- **SI:H Integrity** - High. Other systems can be altered
- **SA:H Availability** - High. Other systems can be taken down

## Timeline

1.  28 July 2025CVE-2025-54298 record published by its CNA

## Rule details

[CVE-2025-54298](https://mysites.guru/vulnerabilities/CVE-2025-54298/)

CommentBox

Affected versions: ≤ 1.1.0

Full advisory: [nvd.nist.gov](https://nvd.nist.gov/vuln/detail/CVE-2025-54298)

## References

-   [CVE-2025-54298 on cve.org (the official CVE record)](https://www.cve.org/CVERecord?id=CVE-2025-54298)
-   [CVE-2025-54298 in the NIST National Vulnerability Database](https://nvd.nist.gov/vuln/detail/CVE-2025-54298)

## CVE-2025-54298 questions

Show all

Which versions are affected by CVE-2025-54298?

[CVE-2025-54298](https://mysites.guru/vulnerabilities/CVE-2025-54298/) affects CommentBox up to and including 1.1.0.

How do I fix CVE-2025-54298?

Update CommentBox to the newest release from the vendor. This flaw covers versions up to 1.1.0, so any later release is outside it.

How severe is CVE-2025-54298?

Joomla CNA scores it 9.4 (Critical) under CVSS 4.0. In plain terms: reachable across the internet, no account needed and someone has to visit a page.

## 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.