---
id: CVE-2026-90906
title: >-
  Joomla! Core - [20260901] - XSS in HTMLHelper::link method in Joomla
  1.5.0-5.4.8, 6.0.0-6.1.3 - Lack of escaping leads to XSS vulnerabilities in
  the link method of the HTML Helper.
summary: >-
  Joomla! Core - [20260901] - XSS in HTMLHelper::link method in Joomla
  1.5.0-5.4.8, 6.0.0-6.1.3 - Lack of escaping leads to XSS vulnerabilities in
  the link method of the HTML Helper.
severity: medium
cvss: 5.9
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U'
cwe:
  - CWE-79
vendor: Joomla! Project
product: Joomla! CMS
affected:
  - joomla_cms 1.5.0-5.4.8
  - joomla_cms 6.0.0-6.1.3
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T17:17:12.920'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90906'
references:
  - url: >-
      https://developer.joomla.org/security-centre/1081-20260901-core-xss-in-htmlhelper-link-method.html
    label: security@joomla.org
  - url: 'https://www.joomla.org/'
    label: security@joomla.org
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-09-29T17:41:02.207Z'
---

## Overview

Joomla! Core - [20260901] - XSS in HTMLHelper::link method in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - Lack of escaping leads to XSS vulnerabilities in the link method of the HTML Helper.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.