Cross-site scripting in Zabbix - CVE-2026-59788
Published: October 5, 2026
Vulnerability identifier: #VU153275
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-59788
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary JavaScript in a Super Admin's browser.
The vulnerability exists due to improper validation of URL schemes in the email media type OAuth configuration form when a Super Admin opens an attacker-supplied media type import file. A remote privileged user can provide a crafted media type configuration to execute arbitrary JavaScript in a Super Admin's browser.
Affected software
Zabbix
How to mitigate CVE-2026-59788
Install security update from vendor's website.
Zabbix - update to 7.4.12