Frontend DoS via the popup.testtriggerexpr action
Priority LOW 25CWE-405Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
An unauthenticated user is able to cause disproportionate CPU load on the Frontend webserver by sending specifically crafted requests to the Frontend popup.testtriggerexpr action, leading to potential denial of service.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00629 50th 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
- Partial
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:*:*:*:*:*:*:*:* | 6.0.0 to before 6.0.47; 7.0.0 to before 7.0.27; 7.4.0 to before 7.4.11 | Vulnerable | Zabbix |
- cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:* Versions 6.0.0 to before 6.0.47; 7.0.0 to before 7.0.27; 7.4.0 to before 7.4.11 Vulnerable ·Zabbix
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-23930
- 2026-10-03 Alias added: GHSA-88jj-c4p9-959j
- 2026-10-29 EPSS moved to the 50th–90th percentile
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-2026-23930 · CVE Program
- CVE-2026-23930 · NVD
- FIRST EPSS
- GHSA-88jj-c4p9-959j · GitHub Advisory Database · CC BY 4.0
- CVE-2026-23930 · 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