PT-2020-13664 · Joomla · Joomla!

Brian Teeman · Published 2020-06-02 · Updated 2025-04-03 · CVE-2020-13763

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Joomla! versions prior to 3.9.19

Description The default settings of the global textfilter configuration in Joomla! do not block HTML inputs for Guest users. This issue may allow unauthorized users to inject malicious HTML code.

Recommendations For versions prior to 3.9.19, update to version 3.9.19 or later to resolve the issue. As a temporary workaround, consider modifying the global textfilter configuration to block HTML inputs for Guest users. Restrict access to sensitive areas of the application to minimize the risk of exploitation.

Fix

Improper Preservation of Permissions

Weakness Enumeration

CWE-281

Related Identifiers

BIT-JOOMLA-2020-13763

CVE-2020-13763

Affected Products

Joomla!

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2020-13763 · Security Note
• https://osv.dev/vulnerability/BIT-joomla-2020-13763 · Vendor Advisory
• https://developer.joomla.org/security-centre/814-20200602-core-inconsistent-default-textfilter-settings · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-13763 · Vendor Advisory
• https://t.me/cvenotify/4131 · Telegram Post