CVE-2026-23921
Blind, read-only SQL injection in Zabbix API via sortfield parameter
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
Zabbix
oss-project·SE
АО «ИВК»
commercial·RUaka ivk
Сообщество свободного программного обеспечения
oss-projectaka fsf
ООО «Ред Софт»
commercial·RUaka red soft
Zabbix LLC.
commercial·USaka zabbix llc, zabbix
and 1 more affected products View all →
Exploitability
Official Patch Available
Attack Graph
Products CVE Techniques Tactics
Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.
MITRE ATT&CK
1 technique Initial Access
References
https://support.zabbix.com/browse/ZBX-27640
support.zabbix.com
https://redos.red-soft.ru/search/?iblock_id=24&q=CVE-2026-23921
redos.red-soft.ru
https://support.zabbix.com/browse/ZBX-27640
support.zabbix.com
and 2 more references View all →
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