{"id":"CVE-2026-23938","title":"An authenticated administrator is able to crash Zabbix server or proxy by creating specifically crafted preprocessing/script item JavaScript scripts, leading to potential denial of service.","summary":"An authenticated administrator is able to crash Zabbix server or proxy by creating specifically crafted preprocessing/script item JavaScript scripts, leading to potential denial of service.","severity":"medium","cvss":4.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-248"],"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":"2026-09-23","sourceUpdated":"2026-09-23T15:41:10.513","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-23938","references":[{"url":"https://support.zabbix.com/browse/ZBX-28075","label":"security@zabbix.com"}],"tags":["nvd"],"epss":0.00298,"epssPercentile":0.22757,"ingestedAt":"2026-09-23T16:27:22.630Z","slug":"CVE-2026-23938","body":"## Overview\n\nAn authenticated administrator is able to crash Zabbix server or proxy by creating specifically crafted preprocessing/script item JavaScript scripts, 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":"sunlit","depthScore":27,"depthScoreParts":{"impact":27,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}