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CVE-2026-101127Joomla Extension - balbooa.com - Unauthenticated upload filename stored XSS in Balbooa Forms < 2.4.3.4
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`.
8.6 HIGHEPSS 0.33%Not in KEVNVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 8.6 | HIGH | 4.0Joomla (CNA) | 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 |
| 9.4 | CRITICAL | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L |
Details
- CVE ID
- CVE-2026-101127
- Status
- Analyzed
- Assigner (CNA)
- Joomla
- Published
- Sep 29, 2026
- Last modified
- 2026-10-06 16:47 UTC
- Weaknesses
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
As published by the CNA in the CVE record.
balbooa.comBalbooa Forms extension for Joomla1 version range
- 1.0.0-2.4.3.3