CVE-2026-23921

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://support.zabbix.com/browse/ZBX-27640	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:zabbix:zabbix::::::::
	cpe:2.3:a:zabbix:zabbix::::::::
	cpe:2.3:a:zabbix:zabbix::::::::

History

No history.

Information

Published : 2026-03-24 19:16

Updated : 2026-09-10 21:13

NVD link : CVE-2026-23921

Mitre link : CVE-2026-23921

CVE.ORG link : CVE-2026-23921

JSON object : View

Products Affected

zabbix

zabbix

CWE

CWE-89

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

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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."}, {"lang": "es", "value": "Un usuario de Zabbix con privilegios bajos y acceso a la API puede explotar una vulnerabilidad de inyecci\u00f3n SQL ciega en include/classes/api/CApiService.php para ejecutar sentencias SELECT de SQL arbitrarias a trav\u00e9s del par\u00e1metro sortfield. Aunque los resultados de la consulta no se devuelven directamente, un atacante puede exfiltrar datos arbitrarios de la base de datos mediante t\u00e9cnicas basadas en tiempo, lo que podr\u00eda llevar a la divulgaci\u00f3n de identificadores de sesi\u00f3n y al compromiso de cuentas de administrador."}], "lastModified": "2026-09-10T21:13:20.120", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "81A39B0A-C0D7-464A-AFE5-E88314DB4F35", "versionEndExcluding": "7.0.22", "versionStartIncluding": "7.0.0"}, {"criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D84A2506-3FE5-4251-8F53-D870916024C2", "versionEndExcluding": "7.2.15", "versionStartIncluding": "7.2.0"}, {"criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "82070C2B-7BD0-4F96-AE73-74048BFFB69D", "versionEndExcluding": "7.4.6", "versionStartIncluding": "7.4.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@zabbix.com"}