{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "7.0.0"
              },
              {
                "fixed": "7.0.22"
              },
              {
                "introduced": "7.4.0"
              },
              {
                "fixed": "7.4.6"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "49955f1fb5c9168a8a24b053f7ade6b3d903143c"
            },
            {
              "fixed": "ba52e2ee4ff8768c8450819a772886d79dcde0b4"
            },
            {
              "introduced": "372a4e93c48ecd25aa666949a055a02369031861"
            },
            {
              "fixed": "626d2b8a4820a424efe8fd39df3b706468f1e5d4"
            }
          ],
          "repo": "https://github.com/zabbix/zabbix",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "cpes": [
          "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "7.2.0"
          },
          {
            "fixed": "7.2.15"
          }
        ],
        "source": "CPE_RANGE",
        "vendor_product": "zabbix:zabbix"
      }
    ]
  },
  "details": "Host and event action script input is validated with a regex (set by the administrator), but the validation runs in multiline mode. If ^ and $ anchors are used in user input validation, an injected newline lets authenticated users bypass the check and inject shell commands.",
  "id": "CVE-2026-23920",
  "modified": "2026-09-12T03:30:43.407994511Z",
  "published": "2026-03-24T19:16:49.557Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://support.zabbix.com/browse/ZBX-27639"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}