CVE-2026-65887 Joomla Extension - balbooa.com - Unauthenticated arbitrary password reset in Gridbox < 2.20.2

Q: What is CVE-2026-65887?

CVE-2026-65887 is a critical authentication bypass vulnerability in balbooa.com Gridbox extension for Joomla, published on 29 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Q: Is CVE-2026-65887 being exploited?

There is no known exploitation of CVE-2026-65887 in the wild and no public exploit code.

Q: How do I fix CVE-2026-65887?

No fix has been published for CVE-2026-65887 yet. Limit exposure of the affected software until one is available.

Critical 10.0 Published 29 Jul 2026 Updated 12 Aug 2026

Unauthenticated attackers can reset passwords for non-super-admin users, allowing them to log in and act as those users.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-65887?

CVE-2026-65887 is a critical authentication bypass vulnerability in balbooa.com Gridbox extension for Joomla, published on 29 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Joomla Extension - balbooa.com - Unauthenticated arbitrary password reset in Gridbox < 2.20.2 - The resetPassword method allows actors to reset any user password, allowing to login and act as these users - excluding super admins.

Weakness: CWE-284

Which versions are affected by CVE-2026-65887?

It affects 1 product.

Products include Balbooa Gridbox.

How do I fix CVE-2026-65887?

No fix has been published for CVE-2026-65887 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-65887 being exploited?

There is no known exploitation of CVE-2026-65887 in the wild and no public exploit code.

Sources

Also known as GHSA-f53f-94jh-jchq.