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CVE-2026-23926

Stored XSS vulnerability in Host navigator widget maintenance tooltip

High7.3EPSS 0.26%
Published
Updated
Reserved
Assigned by
Zabbix

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.

Scores

CVSS scores of CVE-2026-23926, by who scored it
Scored byCVSSScoreVector
ZabbixCNA (assigner)4.0High7.3CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
NVDNVD · Analyzed4.0High7.3CVSS: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:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
0.26% · top 82% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.3.

Weakness

Affected products

  • Zabbix · Zabbix

    • affected 7.0.0 – ≤ 7.0.23
    • affected 7.4.0 – ≤ 7.4.7

What to do

Solution: Update the affected components to their respective fixed versions.

Workaround: Disable the Host navigator widget via Administration -> General -> Modules.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .