Skip to content
CVE PROGRAM SOURCE RECORD7.7 High

CVE-2026-23920

Host and event action script regex validation can be bypassed in certain situations, leading to potential command injection

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Zabbix

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Zabbix Zabbix

Default version status: unknown

  • 7.0.0 to ≤ 7.0.21affected
  • 7.2.0 to ≤ 7.2.14affected
  • 7.4.0 to ≤ 7.4.5affected

References