Description

Joomla! Core is prone to a security bypass vulnerability. Exploiting this issue may allow attackers to bypass intended access restrictions and perform otherwise restricted actions. Joomla! Core versions 3.x.x ranging from 3.8.8 and up to and including 3.9.16 are vulnerable.

Remediation

Update to Joomla! Core version 3.9.17 or latest

References

https://developer.joomla.org/security-centre/809-20200401-core-incorrect-access-control-in-com-users-access-level-editing-function.html

Related Vulnerabilities

Moodle Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2021-36398)

WordPress Ultimate Member Plugin URL Redirection to Untrusted Site ('Open Redirect') Vulnerability (CVE-2022-1209)

WordPress Plugin Yasr-Yet Another Stars Rating Unspecified Vulnerability (1.3.2)

WordPress Plugin WP Prayer Cross-Site Scripting (1.9.6)

WordPress Plugin WP Product Review Lite Cross-Site Scripting (3.7.5)

Severity

High

Classification

CVE-2020-11891 CWE-264 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Tags

Missing Update Authentication Bypass