CVE-2026-23921 | Zabbix up to 7.0.21/7.2.14/7.4.5 CApiService.php sortfield sql injection

VDB-352834 · CVE-2026-23921 · GCVE-0-2026-23921 ZABBIX UP TO 7.0.21/7.2.14/7.4.5 CAPISERVICE.PHP SORTFIELD SQL INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.3 $0-$5k 0.77+ Summaryinfo A vulnerability was found in Zabbix up to 7.0.21/7.2.14/7.4.5. It has been declared as critical. This impacts an unknown function of the file include/classes/api/CApiService.php. Executing a manipulation of the argument sortfield can lead to sql injection. The identification of this vulnerability is CVE-2026-23921. The attack may be launched remotely. There is no exploit available. Detailsinfo A vulnerability was found in Zabbix up to 7.0.21/7.2.14/7.4.5. It has been declared as critical. This vulnerability affects some unknown processing of the file include/classes/api/CApiService.php. The manipulation of the argument sortfield with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes: 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. The advisory is available at support.zabbix.com. This vulnerability was named CVE-2026-23921 since 01/19/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/24/2026). This vulnerability is assigned to T1505 by the MITRE ATT&CK project. By approaching the search of inurl:include/classes/api/CApiService.php it is possible to find vulnerable targets with Google Hacking. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Type Network Management Software Name Zabbix Version 7.0.0 7.0.1 7.0.2 7.0.3 7.0.4 7.0.5 7.0.6 7.0.7 7.0.8 7.0.9 7.0.10 7.0.11 7.0.12 7.0.13 7.0.14 7.0.15 7.0.16 7.0.17 7.0.18 7.0.19 7.0.20 7.0.21 7.2.0 7.2.1 7.2.2 7.2.3 7.2.4 7.2.5 7.2.6 7.2.7 7.2.8 7.2.9 7.2.10 7.2.11 7.2.12 7.2.13 7.2.14 7.4.0 7.4.1 7.4.2 7.4.3 7.4.4 7.4.5 License open-source CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 6.3 VulDB Meta Temp Score: 6.3 VulDB Base Score: 6.3 VulDB Temp Score: 6.3 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Sql injection CWE: CWE-89 / CWE-74 / CWE-707 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Google Hack: 🔒 Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 01/19/2026 CVE reserved 03/24/2026 +64 days Advisory disclosed 03/24/2026 +0 days VulDB entry created 03/24/2026 +0 days VulDB entry last update Sourcesinfo Advisory: support.zabbix.com Status: Confirmed CVE: CVE-2026-23921 (🔒) GCVE (CVE): GCVE-0-2026-23921 GCVE (VulDB): GCVE-100-352834 Entryinfo Created: 03/24/2026 20:47 Changes: 03/24/2026 20:47 (66) Complete: 🔍 Cache ID: 99:D5E:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸