CVE-2026-101127

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`.

CVSS v3 9.4 CRITICAL

9.4^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://www.balbooa.com/	Product

Configurations

Configuration 1 (hide)

cpe:2.3:a:balbooa:forms:*:*:*:*:*:joomla\!:*:*

History

06 Oct 2026, 16:47

Type	Values Removed	Values Added
References	~~() https://www.balbooa.com/ -~~	() https://www.balbooa.com/ - Product
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.4
CPE		cpe:2.3:a:balbooa:forms::::::joomla\!::*
First Time		Balbooa forms Balbooa

29 Sep 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-29 17:17

Updated : 2026-10-06 16:47

NVD link : CVE-2026-101127

Mitre link : CVE-2026-101127

CVE.ORG link : CVE-2026-101127

JSON object : View

Products Affected

balbooa

forms

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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