Bug 2545874 (CVE-2026-59786) - CVE-2026-59786 zabbix: zabbix: Host status spoofing via unauthenticated active agent heartbeats
Summary: CVE-2026-59786 zabbix: zabbix: Host status spoofing via unauthenticated activ...
Keywords:
Status: NEW
Alias: CVE-2026-59786
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2545909
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-05 10:51 UTC by OSIDB Bzimport
Modified: 2026-10-05 13:04 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-10-05 10:51:39 UTC 
Zabbix Server and Proxy accept the active agent heartbeat message regardless of the configured PSK or certificate authentication. This means someone with access to the Zabbix trapper port can report an arbitrary host using an active agent as available, resulting in a loss of integrity.
Note You need to log in before you can comment on or make changes to this bug.