{"id":"CVE-2026-23930","title":"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.","summary":"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.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-405"],"vendor":"zabbix","product":"zabbix","affected":["zabbix >= 6.0.0, < 6.0.47","zabbix >= 7.0.0, < 7.0.27","zabbix >= 7.4.0, < 7.4.11"],"patched":["zabbix 7.4.11"],"published":"2026-08-18","updated":"2026-09-08","sourceUpdated":"2026-09-08T15:05:57.843","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-23930","references":[{"url":"https://support.zabbix.com/browse/ZBX-28069","label":"security@zabbix.com"}],"tags":["nvd"],"epss":0.00355,"epssPercentile":0.29172,"ingestedAt":"2026-09-08T15:33:26.953Z","slug":"CVE-2026-23930","body":"## Overview\n\nAn 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.\n\n## Affected\n\n- `zabbix >= 6.0.0, < 6.0.47`\n- `zabbix >= 7.0.0, < 7.0.27`\n- `zabbix >= 7.4.0, < 7.4.11`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `zabbix 7.4.11`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}