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`.
Published:Sep 29, 2026
Last Modified:Oct 6, 2026
EPS:Sep 29, 2026
EPSS Score:0.00318
CVSS Score:9.4
Affected Products
Vendor
Product
Action
Vendor
Balbooa
Product
Forms
Balbooa
Forms
Vendor
Balbooa.com
Product
Balbooa.com Balbooa Forms Extension For Joomla
Balbooa.com
Balbooa.com Balbooa Forms Extension For Joomla
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
References
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
