UpHeron
All vulnerabilities

Servers and applications

CVE-2021-27927

In Zabbix from 4.0.x before 4.0.28rc1, 5.0.0alpha1 before 5.0.10rc1, 5.2.x before 5.2.6rc1, and 5.4.0alpha1 before 5.4.0beta2, the CControllerAuthenticationUpdate controller lacks a CSRF protection mechanism. The code inside this controller calls diableSIDValidation inside the init() method. An attacker doesn't have to know Zabbix user login credentials, but has to know the correct Zabbix URL…

Severity
High 8.8
Published
3 Mar 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
ZabbixServers and applications · cpe:a:zabbix:zabbix
  • From 4.0.0 up to 4.0.27
  • From 5.0.0 up to 5.0.9
  • From 5.2.0 up to 5.2.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-27927
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-27927