Description

Joomla! Core is prone to a Denial of Service vulnerability. Exploiting this issue may allow an attacker to cause a broken usergroups table, thus denying service to legitimate users. 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/857-20210702-core-dos-through-usergroup-table-manipulation.html

Related Vulnerabilities

OpenSSL Use After Free Vulnerability (CVE-2016-6309)

MySQL CVE-2016-0666 Vulnerability (CVE-2016-0666)

WordPress Plugin Slideshow Gallery LITE Cross-Site Scripting (1.6.4)

WordPress Plugin Catch Breadcrumb Security Bypass (1.6)

phpMyAdmin Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2016-2044)

Severity

High

Classification

CVE-2021-26036 CWE-400 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Tags

Missing Update Denial Of Service