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.
Metrics
Affected Vendors & Products
References
History
Wed, 25 Mar 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 25 Mar 2026 12:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Zabbix
Zabbix zabbix |
|
| Vendors & Products |
Zabbix
Zabbix zabbix |
Tue, 24 Mar 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Host and event action script regex validation can be bypassed in certain situations, leading to potential command injection | |
| Weaknesses | CWE-78 | |
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: Zabbix
Published:
Updated: 2026-03-26T03:55:29.372Z
Reserved: 2026-01-19T14:02:54.327Z
Link: CVE-2026-23920
Updated: 2026-03-25T19:24:08.184Z
Status : Awaiting Analysis
Published: 2026-03-24T19:16:49.557
Modified: 2026-03-25T15:41:58.280
Link: CVE-2026-23920
No data.