CVE-2026-23921
Blind, read-only SQL injection in Zabbix API via sortfield parameter
HIGH 8.7EPSS 3.9%
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
- Zabbix
- CVSS v4.0 ZABBIX
- 8.7 HIGH
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 - CVSS v3.1 NVD
- 8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 3.94% chance of exploitation in the next 30 days, 90th percentile
- Published
- 2026-03-24
- Updated
- 2026-03-26
Proof-of-concept exploits (1)
- qucklecrabik/CVE-2026-239215★ · 2026-09-22