---
id: CVE-2026-85191
title: >-
  Joomla Extension - regularlabs.com - Privileged stored XSS via rtla-alias
  option in Tabs & Accordions extension for Joomla < 3.1.0 - Tabs & Accordions
  rewrites links matching an item alias into calls to its browser API
summary: >-
  Joomla Extension - regularlabs.com - Privileged stored XSS via rtla-alias
  option in Tabs & Accordions extension for Joomla < 3.1.0 - Tabs & Accordions
  rewrites links matching an item alias into calls to its browser API. The
  affected rend…
severity: high
cvss: 7.5
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/S:N/AU:N'
cwe:
  - CWE-79
vendor: regularlabs.com
product: plg_system_tabs
affected:
  - plg_system_tabs 1.0.0-3.0.5
published: '2026-09-14'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T19:28:06.713'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85191'
references:
  - url: 'https://www.regularlabs.com/'
    label: security@joomla.org
tags:
  - nvd
  - cve.org
epss: 0.00247
epssPercentile: 0.16254
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-14T14:56:56.518512Z'
cvssSource: cna
ingestedAt: '2026-09-14T15:23:07.420Z'
---

## Overview

Joomla Extension - regularlabs.com - Privileged stored XSS via rtla-alias option in Tabs & Accordions extension for Joomla < 3.1.0 - Tabs & Accordions rewrites links matching an item alias into calls to its browser API. The affected renderer places the alias inside a quoted JavaScript argument in an HTML onclick attribute without securing both the JavaScript-string and HTML-attribute contexts. A crafted data-rlta-alias value can therefore change the generated handler.

## Remediation

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