What’s Vulnerable › Vulnerabilities
CVE-2026-23921: Blind, read-only SQL injection in Zabbix API via sortfield parameter
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 4.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-03-24 · updated 2026-09-10
- Weakness: CWE-89
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.
Affected products
- Zabbix: from 7.0.0 before 7.0.22; from 7.2.0 before 7.2.15; from 7.4.0 before 7.4.6 — fixed in 7.0.22, 7.2.15, 7.4.6
How to fix
Upgrade to a fixed version: Zabbix 7.0.22, 7.2.15, 7.4.6. Check the vendor advisory for mitigations.
References
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