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CVE-2026-101127

9.4, critical

Balbooa.com Balbooa Forms extension for Joomla Cross-Site Scripting Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
9.4, critical critical CVSS v3.1
EPSS, next 30 days
0.3% higher than 24.5% of scored CVEs
Exploitation
No public evidence
Published
29 Sept 202618 days ago

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`.

Details

Vendor
Balbooa.com
Product
Balbooa Forms extension for Joomla
Weakness
CWE-79 (opens in a new tab)
Status
Analyzed
Updated
6 Oct 2026
Assigner
security@joomla.org

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

References 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Balbooa.com CVEs

Every Balbooa.com CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-102425 Balbooa.com Balbooa Forms extension for Joomla Code Injection Vulnerability EPSS 0.4% 10, critical
  • CVE-2026-102424 Balbooa.com Balbooa Forms extension for Joomla Path Traversal Vulnerability EPSS 0.4% 7.5, high

Beyond this page

Is CVE-2026-101127 in your network?

This page tells you how dangerous CVE-2026-101127 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-101127 comes with the devices to patch.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.