---
title: "CVE-2024-28593\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2024-28593?format=md
keywords: index, follow
---

# CVE-2024-28593

Publication date 22 March 2024

Last updated 4 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.4 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2024-28593?format=md#impact-score)

Toggle side navigation

## Description

The Chat activity in Moodle 4.3.3 allows students to insert a potentially
unwanted HTML A element or IMG element, or HTML content that leads to a
performance degradation. NOTE: the vendor's Using\_Chat page says "If you
know some HTML code, you can use it in your text to do things like insert
images, play sounds or create different coloured and sized text." This page
also says "Chat is due to be removed from standard Moodle."

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| moodle | 26.04 LTS resolute | Not in release |
| 25.10 questing | Not in release |
| 25.04 plucky | Not in release |
| 24.10 oracular | Not in release |
| 24.04 LTS noble | Not in release |
| 22.04 LTS jammy | Not in release |
| 20.04 LTS focal | Not in release |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.4 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | Required |
  | Scope | Unchanged |
  | Confidentiality impact | Low |
  | Integrity impact | Low |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.4 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-28593)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2024-28593)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2024-28593)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2024-28593)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2024-28593>