← Vulnerability feed

Vulnerability record · CVE-2026-23926 · published 6 May 2026

CVE-2026-23926: Zabbix cross-site scripting vulnerability

Zabbix · Zabbix

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.

7.3 CVSS 4.0 High EPSS 0.26% · top 83.7% CWE-79 · Cross-site scripting
7.3CVSS 4.0 base score
0.26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
18 Sep 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://support.zabbix.com/browse/ZBX-27758 Vendor Advisory

Track CVE-2026-23926 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-23131Zabbix Frontend SAML SSO authentication bypass via session spoofingZabbix Frontend fails to verify the user login stored in the session when SAML SSO authentication is enabled, allowing session data to be modified. A…KEVEPSS 96%analysed5.3CVE-2022-23134Zabbix Frontend setup.php improper access control allows unauthenticated config changeAfter initial setup, some steps of Zabbix Frontend's setup.php remain reachable by unauthenticated users rather than only super-administrators. An at…KEVEPSS 95%analysed10.0CVE-2007-0640Zabbix vulnerabilityBuffer overflow in ZABBIX before 1.1.5 has unknown impact and attack vectors related to "SNMP IP addresses."EPSS 2.0%9.9CVE-2024-42327Zabbix frontend SQL injection in CUser addRelatedObjectsThe CUser.addRelatedObjects function in the Zabbix frontend contains an SQL injection reachable through the CUser.get API call. Any account with API …EPSS 79%analysed9.8CVE-2022-43516Microsoft windows firewall vulnerabilityA Firewall Rule which allows all incoming TCP connections to all programs from any source and to all ports is created in Windows Firewall after Zabbi…EPSS 0.95%9.8CVE-2020-11800Zabbix vulnerabilityZabbix Server 2.2.x and 3.0.x before 3.0.31, and 3.2 allows remote attackers to execute arbitrary code.EPSS 9.2%9.8CVE-2013-3738Zabbix improper input validation vulnerabilityA File Inclusion vulnerability exists in Zabbix 2.0.6 due to inadequate sanitization of request strings in CGI scripts, which could let a remote mali…EPSS 3.1%9.8CVE-2013-5743Zabbix SQL injection in multiple componentsZabbix versions 1.8.x before 1.8.18rc1, 2.0.x before 2.0.9rc1, and 2.1.x before 2.1.7 contain multiple SQL injection vulnerabilities. The record does…EPSS 80%analysed

Source: NIST National Vulnerability Database (record CVE-2026-23926), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.