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

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MySQL CVE-2021-35629 Vulnerability (CVE-2021-35629)

ownCloud Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2017-5865)

WordPress 4.2.x Multiple Vulnerabilities (4.2 - 4.2.6)

Magento Insufficient Verification of Data Authenticity Vulnerability (CVE-2019-8124)

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