Joomla High · CVSS 7.5 CVE-2026-63683 July 22, 2026

Joomla: security vulnerability

Joomla

Security vulnerability in the Joomla component. Threat level: High (CVSS 7.5).

Worried this flaw is on your site? Check it for free in under a minute, or have us fix and secure it right away.

Who is affected

This vulnerability affects: Joomla. If you use this component on your site, check the version and update it as soon as possible.

How dangerous

Rating: High, CVSS 7.5 out of 10. It is worth acting before the flaw is exploited.

What this flaw is

This is a security vulnerability in one of the site components. Full technical details are described in the source NVD entry, linked below.

Even seemingly lower-priority flaws are often chained into attacks, so it is not worth delaying the update of the vulnerable component.

Score breakdown (CVSS vector)

What the CVSS 7.5 rating means in practice:

  • The attack can be carried out remotely, over the internet.
  • No login or account required.
  • Requires no action from the victim.
  • At risk: integrity (data can be altered).

Weakness class: CWE-290.

What to do

  • Update the vulnerable component (Joomla) to the latest version.
  • If a patch is not out yet, temporarily disable the vulnerable element.
  • Check whether the site has already been attacked: unusual files, new administrator accounts, redirects.
  • Make a backup before you start making changes.
Do not guess, check

Does this flaw affect your site?

We will run a free audit: we check versions, plugins, and configuration, and tell you plainly whether you are safe.

Request a free audit →