# CVE-2026-23921: zabbix: A low privilege Zabbix user with API access can exploit a blind SQL injection vulnerability in include/classes/api/CA...

CVE-2026-23921 is fixed in zabbix on 1 platform, first by DEBIAN-CVE-2026-23921, released March 24, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-23921
- Priority: High
- CVSS: 8.8 (high)
- EPSS: 0.0410
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 24, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | zabbix Debian 13.5 (trixie) | 1:7.0.22+dfsg-1~deb13u1 | [DEBIAN-CVE-2026-23921](https://patchblox.com/security/data/fix/linux/debian-cve-2026-23921.md) | Mar 24, 2026 |
| Linux | zabbix Debian 14 | 1:7.0.22+dfsg-1 | [DEBIAN-CVE-2026-23921](https://patchblox.com/security/data/fix/linux/debian-cve-2026-23921.md) | Mar 24, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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