Rapid7

vulnerability

Joomla!: [20190403] - Core - Object.prototype pollution in JQuery $.extend (CVE-2019-11358)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
Apr 12, 2019
Added
Apr 12, 2019
Modified
Mar 30, 2026

Description

jQuery before 3.4.0, as used in Drupal, Backdrop CMS, and other products, mishandles jQuery.extend(true, {}, ...) because of Object.prototype pollution. If an unsanitized source object contained an enumerable __proto__ property, it could extend the native Object.prototype.

Solution

joomla-upgrade-3_9_5
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.