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 ranging from 2.5.0 and up to and including 3.9.27 are vulnerable.

Remediation

Update to Joomla! Core version 3.9.28 or latest

References

https://developer.joomla.org/security-centre/859-20210704-core-privilege-escalation-through-com-installer.html

Related Vulnerabilities

Atlassian Jira Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2016-6285)

WordPress Plugin zeList Directory Cross-Site Scripting (0.5.11.07)

Magento Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') Vulnerability (CVE-2020-24406)

Liferay Portal Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2023-44310)

WordPress Plugin AccessPress Anonymous Post Pro Arbitrary File Upload (3.1.9)

Severity

High

Classification

CVE-2021-26038 CWE-284 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