Joomla High · CVSS 7.1 CVE-2026-78083 September 10, 2026

Joomla: CSRF (request forgery)

Joomla

CSRF (request forgery) in the Joomla component. Threat level: High (CVSS 7.1).

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 7.1 out of 10. It is worth acting before the flaw is exploited.

What this flaw is

CSRF tricks a logged-in user into unknowingly performing an action (e.g. changing settings or creating an account) when they visit a crafted page.

Combined with an administrator account, it lets an attacker quietly change the site configuration or add their own access.

Score breakdown (CVSS vector)

What the CVSS 7.1 rating means in practice:

  • The attack can be carried out remotely, over the internet.
  • No login or account required.
  • Requires user action (e.g. clicking a link).

Weakness class: CWE-352.

How to fix: CSRF (request forgery)

  • Update the vulnerable component to the fixed version.
  • Verify no settings, accounts or content were changed without your knowledge.
  • Log out active sessions and, for sensitive actions, keep administrators on a separate browser profile.
  • Enable two-factor authentication so a forged request cannot fully take over an account.

Prefer not to do this yourself? We will handle the update, check for signs of a break-in and secure the site. Write to us →

Frequently asked questions

Does this vulnerability affect my site?

It affects sites that use Joomla. Check whether you have this component installed and which version, the flaw only applies to the vulnerable version range. You can verify it in under a minute with our free vulnerability scanner.

How do I check whether I have the vulnerable version?

In your admin panel (in WordPress: Plugins / Themes) check the installed version of Joomla and compare it with the vendor advisory that names the fixed version. If it is lower, or you are not sure, run our scanner, which reads the versions visible in the site code.

How urgently should I react?

This is a Wysoka-severity flaw, so treat it as urgent, high-impact vulnerabilities are often exploited automatically within hours of disclosure. Update as soon as possible.

What if a patch is not available yet?

Until a fix ships, reduce the exposure: temporarily disable the vulnerable component, restrict access to the affected functionality, or add a WAF rule blocking the vulnerable request. Keep a current off-site backup and watch for signs of a break-in.

Is updating alone enough?

If the site has not been attacked yet, updating to the patched version closes the hole. If there are already signs of compromise (unknown files, new admin accounts, redirects), the update does not undo the break-in, you also need to clean the site and rotate passwords and the WordPress salts.

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 →

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Joomla: SQL injection CVE-2026-78082 · Critical Joomla: cross-site scripting (XSS) CVE-2026-78302 · High See the full list →