CVE•Published 2026-03-24•Modified 2026-09-10•1 article on news•5 live references•NVD data

CVE-2026-23921Zabbix · Zabbix

Vulnerability data via NVD (ingested)

CVSS v3.1

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 14% of all CVEs

Weaknesses (CWE)

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

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.

Timeline

Published 2026-03-24

Modified 2026-09-10

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-23921

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Zabbix Zabbix"

All exposed Zabbix Zabbix instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Zabbix"

HTTP body or banner mentions "Zabbix" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-23921