SQL Injection: Hibernate in Zabbix - CVE-2026-23921
Published: March 25, 2026
Vulnerability identifier: #VU124618
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-23921
CWE-ID: CWE-564
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Zabbix
Affected software:
Zabbix
Zabbix
Detailed vulnerability description
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to blind SQL injection in the Zabbix API via the sortfield parameter in include/classes/api/CApiService.php when processing API requests. A remote user can send a specially crafted API request to exfiltrate arbitrary database data through time-based techniques, potentially leading to session identifier disclosure and administrator account compromise.
Access to a Zabbix account with API access is required to exploit this vulnerability.
How to mitigate CVE-2026-23921
Install security update from vendor's website.