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Type:
Defect (Security)
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Resolution: Fixed
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Priority:
Minor
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None
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Affects Version/s: None
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Component/s: Frontend (F)
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None
| CVE ID | CVE-2026-23930 |
| CVSS score | 5.3 (Medium) |
| CVSS vector | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| Affected components | Frontend |
| Summary | Frontend DoS via the popup.testtriggerexpr action |
| Description | An unauthenticated user is able to cause disproportionate CPU load on the Frontend webserver by sending specifically crafted requests to the Frontend popup.testtriggerexpr action, leading to potential denial of service. |
| Known attack vectors | An unauthenticated user sending crafted HTTP requests to Zabbix Frontend. |
| Affected and fix version/s | Affected: 6.0.0 - 6.0.46 → Fixed: 6.0.47 Affected: 7.0.0 - 7.0.26 → Fixed: 7.0.27 Affected: 7.4.0 - 7.4.10 → Fixed: 7.4.11 |
| Mitigation | Update the affected components to their respective fixed versions. |
| Workarounds | - |
| Acknowledgements | Zabbix wants to thank barume for submitting this report on the HackerOne bug bounty platform. |