CVE-2026-23921 details a high-severity blind SQL injection vulnerability affecting Zabbix, specifically within the include/classes/api/CApiService.php component. A low-privilege Zabbix user with API access can exploit this flaw via the sortfield parameter to execute arbitrary SQL selects. Despite not returning direct query results, an attacker can exfiltrate sensitive database data using time-based techniques, potentially leading to session identifier disclosure and administrator account compromise. With a CVSS score of 8.7 HIGH, this vulnerability has a network attack vector and low attack complexity. Currently, there is no evidence of active exploitation, nor are public exploit modules or significant community discussion available.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 7.0.0, <= 7.0.21CPE match | cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:* | ||
>= 7.2.0, <= 7.2.14CPE match | cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:* | ||
>= 7.4.0, <= 7.4.5CPE match | cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
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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