VULNERABILITY INTELLIGENCE
CVE-2026-85190
EPSS probability0.42%
CISA KEVNot currently listed
Published2026-09-14
Last modified2026-09-16
Description
Joomla Extension - regularlabs.com - Privileged stored XSS via class option in Quick Index extension for Joomla < 5.0.5 - Quick Index inserts configurable class values into generated HTML without escaping them for an HTML attribute. A crafted value can close the intended class attribute and introduce a new attribute. Joomla's content filter cannot reliably prevent this because Quick Index creates the executable HTML after the authored plugin syntax was filtered.
Weakness classification
- security@joomla.org: CWE-79