CVE-2026-23933

In Zabbix 7.4 the cryptographic key used for signing Frontend sessions...

CNVD-2020-26585

creationtimestamp| type| source ---|---|--- 2026-08-18 19:00:04+00:00| seen| https://t.me/VulnerabilityNews/41921 2026-08-19 00:00:09+00:00| exploited| https://t.me/VulnerabilityNews/41921...

CVE-2026-59781

When Zabbix Agent was installed on Windows into a custom installation directory, the installer did not verify whether the selected directory had secure access permissions. If the target directory allowed unauthorized users to modify its contents, an attacker could place a malicious DLL that could...

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...

DEBIAN-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-2026-23937

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...

DEBIAN-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...

CVE-2026-23933

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-2026-23935

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...

DEBIAN-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-2026-1199

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...

DEBIAN-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-2026-59781 Improper validation of custom installation directories on Windows could allow installation into locations with unsafe permissions, increasing the risk of DLL sideloading.

When Zabbix Agent was installed on Windows into a custom installation directory, the installer did not verify whether the selected directory had secure access permissions. If the target directory allowed unauthorized users to modify its contents, an attacker could place a malicious DLL that could...

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...

EUVD-2026-60742

When Zabbix Agent was installed on Windows into a custom installation directory, the installer did not verify whether the selected directory had secure access permissions. If the target directory allowed unauthorized users to modify its contents, an attacker could place a malicious DLL that could...

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 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

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...