Joomla Extension - balbooa.com - Unauthenticated upload filename stored XSS in Balbooa Forms < 2.4.3.4 - The public form upload endpoint validates the uploaded file's extension and detected MIME type, but stores the attacker-supplied original multipart filename verbatim in `#__baforms_submissions_attachments.name`. A later anonymous form submission associates that temporary attachment with the newly created submission. When an administrator opens the submission, the component's JavaScript retrieves the stored attachment record and concatenates `file.name` directly into an HTML string. The complete string is assigned to `innerHTML`.

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Fixes

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Workaround

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References
Link Providers
https://www.balbooa.com/ cve-icon cve-icon
History

Wed, 30 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 30 Sep 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Balbooa.com
Balbooa.com balbooa.com Balbooa Forms Extension For Joomla
Vendors & Products Balbooa.com
Balbooa.com balbooa.com Balbooa Forms Extension For Joomla

Tue, 29 Sep 2026 17:00:00 +0000

Type Values Removed Values Added
Description Joomla Extension - balbooa.com - Unauthenticated upload filename stored XSS in Balbooa Forms < 2.4.3.4 - The public form upload endpoint validates the uploaded file's extension and detected MIME type, but stores the attacker-supplied original multipart filename verbatim in `#__baforms_submissions_attachments.name`. A later anonymous form submission associates that temporary attachment with the newly created submission. When an administrator opens the submission, the component's JavaScript retrieves the stored attachment record and concatenates `file.name` directly into an HTML string. The complete string is assigned to `innerHTML`.
Title Joomla Extension - balbooa.com - Unauthenticated upload filename stored XSS in Balbooa Forms < 2.4.3.4
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Joomla

Published:

Updated: 2026-10-01T04:45:23.591Z

Reserved: 2026-09-28T07:02:41.617Z

Link: CVE-2026-101127

cve-icon Vulnrichment

Updated: 2026-09-30T19:50:23.763Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-29T17:17:05.187

Modified: 2026-09-30T21:16:54.787

Link: CVE-2026-101127

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-30T20:30:18Z

Weaknesses