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6.1

Joomla! before 3.9.3 permits hidden code injection

CVE-2019-7740 · published 7 years ago
Summary

Versions of Joomla! older than 3.9.3 contain a flaw in a JavaScript file that can let an attacker insert malicious code into web pages viewed by users. This could let the attacker steal information or manipulate what the user sees. Upgrade Joomla! to version 3.9.3 or newer to close the risk.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
joomla joomla\! >= 2.5.0, <= 3.9.2
cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*
Original advisory text
An issue was discovered in Joomla! before 3.9.3. Inadequate parameter handling in JavaScript code (core.js writeDynaList) could lead to an XSS attack vector.
An issue was discovered in Joomla! before 3.9.3. Inadequate parameter handling in JavaScript code (core.js writeDynaList) could lead to an XSS attack vector.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
6.1 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-79Cross-site Scripting (XSS)
Timeline
Published12 Feb 2019
Updated31 Oct 2026
First seen29 Sep 2026
Sources
CVE-2019-7740 · NVD
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