OS command injection in Zabbix
Priority LOW 35CWE-78Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00309 23rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
No affected products listed by the sources yet.
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:* | 7.0.0 to before 7.0.22; 7.2.0 to before 7.2.15; 7.4.0 to before 7.4.6 | Vulnerable | Zabbix |
- cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.0.22; 7.2.0 to before 7.2.15; 7.4.0 to before 7.4.6 Vulnerable ·Zabbix
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-23920
- 2026-10-03 Alias added: GHSA-2h5x-h7x4-hm9h
References
More Zabbix vulnerabilities
- TI-2022-07300 Authentication bypass by spoofing in Zabbix Frontend KEVCVSS 3.1CRITICAL 9.8
- TI-2024-28315 SQL injection in user.get API CVSS 3.1CRITICAL 9.9
- TI-2016-08210 SQL injection vulnerability in Zabbix before 2.2.14 and 3.0 before 3.0.4 allows remote… CVSS 3.0CRITICAL 9.8
- TI-2013-04884 Multiple SQL injection vulnerabilities in Zabbix 1.8.x before 1.8.18rc1, 2.0.x before 2.0.9rc1, and 2.1.x before 2.1.7. CVSS 3.1CRITICAL 9.8
- TI-2022-07303 Possible view of the setup pages by unauthenticated users if config file already exists KEVCVSS 3.1MEDIUM 5.3
- TI-2024-14721 Time Based SQL Injection in Zabbix Server Audit Log CVSS 3.1CRITICAL 9.1
Sources
- CVE-2026-23920 · CVE Program
- CVE-2026-23920 · NVD
- FIRST EPSS
- GHSA-2h5x-h7x4-hm9h · GitHub Advisory Database · CC BY 4.0
- CVE-2026-23920 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences