CVE-2026-102424: Balbooa Forms unauthenticated path traversal in auto-reply attachments

CVE-2026-102424 · Severity: info · Published 2026-09-29

Balbooa Forms is a Joomla component that enables website administrators to build and deploy online forms with features like auto-reply emails and file uploads. An unauthenticated attacker can exploit a path traversal vulnerability to read any file accessible to the Joomla process by submitting a specially crafted form that includes a traversal path in the filename field, causing the sensitive file to be emailed to them as an attachment. This allows attackers to exfiltrate sensitive configuration files, database credentials, and other sensitive data without authentication.

Vendors: Balbooa.

Quick answers

Is CVE-2026-102424 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-102424 being exploited in the wild.
How severe is CVE-2026-102424?
Informational severity, published 29 September 2026.
Which products and versions are affected?
Balbooa Forms < 2.4.3.4.
Is there a fix for CVE-2026-102424?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-102424 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-102424?
Check whether you run Balbooa Forms at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in Balbooa Forms' handling of upload field state during public form submissions. The component accepts user-supplied JSON that includes filenames but fails to canonicalize paths, validate file ownership, or enforce directory containment. When a form with auto-reply and file attachment enabled is submitted, the component concatenates attacker-controlled filename parameters (including directory traversal sequences like `../../../../`) to the upload directory path and emails the resulting files as attachments. Successful exploitation requires the targeted form to have auto-reply and file attachment options enabled, but no authentication is required.

Affected products

  • balbooa Forms < 2.4.3.4

Timeline

  • 2026-09-29: disclosed

References

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