CVE-2026-102425 Joomla Extension - balbooa.com - Unauthenticated RCE via field shortcode injection in Balbooa Forms < 2.4.3.4

Critical 9.5 Published Updated

Unauthenticated attackers can execute arbitrary code by injecting PHP via form field shortcodes if the optional PHP-after-submission feature is enabled.

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-2026-102425?

CVE-2026-102425 is a critical code injection vulnerability in balbooa.com Balbooa Forms extension for Joomla, published on 29 Sep 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 RCE via field shortcode injection in Balbooa Forms < 2.4.3.4 - Balbooa Forms supports administrator-defined PHP code which runs after a public form submission. The feature also supports form-field shortcodes inside that PHP. Before calling `eval()`, the component replaces each shortcode with the raw value submitted by the visitor, leading to an RCE vector. A public form must use the product's optional PHP-after-submission action and interpolate an attacker-controlled field shortcode inside a double-quoted PHP string to be vulnerable.

Weakness: CWE-94

Which versions are affected by CVE-2026-102425?

It affects 1 product.

Products include Balbooa Forms.

How do I fix CVE-2026-102425?

No fix has been published for CVE-2026-102425 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2026-102425 being exploited?

There is no known exploitation of CVE-2026-102425 in the wild and no public exploit code.

Public exploit code: 2 proofs of concept on GitHub.

Sources

Also known as GHSA-r3hx-8v55-pg55.

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