A low privilege Zabbix user with API access can exploit a blind SQL injection vulnerability in include/classes/api/CApiService.php to execute arbitrary SQL selects via the sortfield parameter. Although query results are not returned directly, an attacker can exfiltrate arbitrary database data through time-based techniques, potentially leading to session identifier disclosure and administrator account compromise.

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Advisories

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Fixes

Solution

Update the affected components to their respective fixed versions.


Workaround

No workaround given by the vendor.

History

Wed, 25 Mar 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


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 A low privilege Zabbix user with API access can exploit a blind SQL injection vulnerability in include/classes/api/CApiService.php to execute arbitrary SQL selects via the sortfield parameter. Although query results are not returned directly, an attacker can exfiltrate arbitrary database data through time-based techniques, potentially leading to session identifier disclosure and administrator account compromise.
Title Blind, read-only SQL injection in Zabbix API via sortfield parameter
Weaknesses CWE-89
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Zabbix

Published:

Updated: 2026-03-26T03:55:36.177Z

Reserved: 2026-01-19T14:02:54.327Z

Link: CVE-2026-23921

cve-icon Vulnrichment

Updated: 2026-03-25T19:24:29.258Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-24T19:16:50.563

Modified: 2026-03-25T15:41:58.280

Link: CVE-2026-23921

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-25T20:49:21Z

Weaknesses