CVE-2026-59781

The Zabbix Agent Windows installer did not validate directory permissions during custom-path installation, allowing attackers to drop a malicious DLL that gets loaded by the agent, enabling arbitrary code execution. The fix detects unsafe directories and requires explicit user confirmation before...

CVE-2026-23938 Server DoS via JavaScript preprocessing or script items

An authenticated administrator is able to crash Zabbix server or proxy by creating specifically crafted preprocessing/script item JavaScript scripts, leading to potential denial of service...

EUVD-2026-60741

An authenticated administrator is able to crash Zabbix server or proxy by creating specifically crafted preprocessing/script item JavaScript scripts, leading to potential denial of service...

CVE-2026-23938 Server DoS via JavaScript preprocessing or script items

An authenticated administrator is able to crash Zabbix server or proxy by creating specifically crafted preprocessing/script item JavaScript scripts, leading to potential denial of service...

CVE-2026-23938

An authenticated administrator is able to crash Zabbix server or proxy by creating specifically crafted preprocessing/script item JavaScript scripts, leading to potential denial of service...

CVE-2026-23938

Zabbix server/proxy is affected: an authenticated administrator can create specifically crafted JavaScript scripts in preprocessing/script items, causing a crash and denial of service . CVSS 4.0 rates this LOW (2.1) due to high privileges required and availability-only impact. Exploitation detail...

CVE-2026-23937 Host PSK extraction in Zabbix API

The Zabbix API host.get action can be exploited by authenticated users to extract a host's PSK key leading to potential loss of data integrity...

CVE-2026-23937

The Zabbix API host.get action allows authenticated users to extract a host's PSK key. With low privileges and network access, an attacker can compromise the pre-shared key used for TLS connections, enabling potential data integrity attacks (CVSS 6.0 MEDIUM, VI:H). The Zabbix Jira ticket ZBX-2807...

EUVD-2026-60740

The Zabbix API host.get action can be exploited by authenticated users to extract a host's PSK key leading to potential loss of data integrity...

CVE-2026-23937

The Zabbix API host.get action can be exploited by authenticated users to extract a host's PSK key leading to potential loss of data integrity...

EUVD-2026-60739

A Zabbix administrator is able to read out of bounds memory by utilizing a flaw in script item/preprocessing JavaScript HttpRequest logic, leading to potential confidentiality loss...

CVE-2026-23935 Use-after-free read in script item/preprocessing HttpRequest body

A Zabbix administrator is able to read out of bounds memory by utilizing a flaw in script item/preprocessing JavaScript HttpRequest logic, leading to potential confidentiality loss...

CVE-2026-23935

A Zabbix administrator is able to read out of bounds memory by utilizing a flaw in script item/preprocessing JavaScript HttpRequest logic, leading to potential confidentiality loss...

CVE-2026-23935

A use-after-free read vulnerability exists in Zabbix's script item/preprocessing (JavaScript) HttpRequest body logic, allowing a privileged (PR:H) administrator on an adjacent network (AV:A) to read out-of-bounds memory, causing high confidentiality impact (VC:H). CVSS 4.0 base score 6.8 (MEDIUM)...

CVE-2026-23933

In Zabbix 7.4, the frontend session signing key was erroneously written to the database seed. When SAML authentication and guest users are both enabled, this key can be extracted and used to forge valid session cookies, enabling unauthorized access. CVSS 4.0 scores this HIGH (7.7). The Zabbix tic...

CVE-2026-23933 Hardcoded session key in Zabbix 7.4

In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid...

EUVD-2026-60737

In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid...

CVE-2026-1199

Zabbix API and Frontend login lockout mechanism has a flaw where several unsuccessful login requests are not properly counted towards the block counter if sent simultaneously, potentially allowing for more password guesses than intended...

CVE-2026-1199 API and Frontend login lockout race condition

Zabbix API and Frontend login lockout mechanism has a flaw where several unsuccessful login requests are not properly counted towards the block counter if sent simultaneously, potentially allowing for more password guesses than intended...

EUVD-2026-60733

Zabbix API and Frontend login lockout mechanism has a flaw where several unsuccessful login requests are not properly counted towards the block counter if sent simultaneously, potentially allowing for more password guesses than intended...