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CVE-2026-23921

Blind, read-only SQL injection in Zabbix API via sortfield parameter

Published: Mar 24, 2026Updated: Mar 25, 2026 Sources: CVE List NVD BDUCWE-89
NVD MITRE
8.8CVSSHIGH
EPSS Score
0.2%
Top 85.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LC:HI:HA:H
Exploitability
AV:NAccess Vector
Network
AC:LAccess Complexity
Low
Impact
C:HConfidentiality
H
I:HIntegrity
H
A:HAvailability
H
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Weaknesses

CWE-89

Affected Products

Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
ZabbixZabbix LLC.
On-premWeb App
Enterprise Software / itsm-monitoring
ZabbixZabbix
On-premDesktop App
Enterprise Software / itsm-monitoring
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «ред софт»commercialRUOperating Systemsaka red soft
zabbix llc.commercialUSEnterprise Softwareaka zabbix llc, zabbix
zabbixoss-projectSEEnterprise Software

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

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
https://security-tracker.debian.org/tracker/CVE-2026-23921
security-tracker.debian.org
and 1 more references View all →

Timeline

Published
Mar 24, 2026
Last Updated
Mar 25, 2026

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