CVE-2026-23921 — Blind, read-only SQL injection in Zabbix API via sortfield parameter
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 sortf…
Published: 2026-03-24 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7