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HIGHCVE-2026-23926Published Modified CNA Zabbix

CVE-2026-23926: Stored XSS vulnerability in Host navigator widget maintenance tooltip

An authenticated (non-super) administrator can create a maintenance period with a JavaScript payload that is executed by any user that opens tooltip for that maintenance period in the Host navigator widget. This can allow the attacker to perform unauthorized actions depending on which user opens the tooltip.

Metrics

CVSS v4.0
7.3
Severity
HIGH
Fixed in
—
Affected Products
1
Affected packages
  • Zabbix / Zabbix
    ≤ 7.0.23 · ≤ 7.4.7
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References
CVE-2026-23926: Stored XSS vulnerability in Host navigator widget maintenance tooltip | HarborGuard CVE