EUVD-2026-14955CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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4Description
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.
Analysis
A blind SQL injection vulnerability exists in Zabbix's API service layer (include/classes/api/CApiService.php) via the sortfield parameter that allows low-privilege users with API access to execute arbitrary SQL SELECT queries without direct result exfiltration. An attacker can leverage time-based blind SQL injection techniques to extract sensitive data such as session identifiers and administrator credentials, potentially leading to full administrative compromise of the Zabbix monitoring infrastructure. …
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Remediation
Within 7 days: Identify all affected systems and apply vendor patches promptly. Validate that input sanitization is in place for all user-controlled parameters.
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