JavaScript Injection Vulnerability in Zabbix Affected by Non-Super Administrator Actions
CVE-2026-23926

7.3HIGH

Key Information:

Vendor

Zabbix

Status
Zabbix
Vendor
CVE Published:
6 May 2026

What is CVE-2026-23926?

An authenticated (non-super) administrator in Zabbix can inadvertently create a maintenance period containing malicious JavaScript payloads. This can execute unauthorized actions when any user interacts with the tooltip in the Host navigator widget. The implications include potential unauthorized access and actions taken by users who view the affected tooltip. Organizations using Zabbix must assess their configurations to mitigate risks associated with this vulnerability.

Affected Version(s)

Zabbix 7.0.0 <= 7.0.23

Zabbix 7.4.0 <= 7.4.7

References

https://support.zabbix.com/browse/ZBX-27758

CVSS V4

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Zabbix wants to thank Daniel Santos (@bananabr) for submitting this report on the HackerOne bug bounty platform.
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