Medium severity · published May 6, 2026
CVE-2026-23926
Stored XSS vulnerability in Host navigator widget maintenance tooltip
6.8
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZA
Zabbix · Zabbix
7.0.0 through 7.0.23; 7.4.0 through 7.4.7 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23926
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-23926
Vendor Advisory
https://support.zabbix.com/browse/ZBX-27758
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