Denial of Service in Packetbeat Affected by Vulnerable PostgreSQL Protocol Parsing

CVE-2026-26932

What is CVE-2026-26932?

The improper validation of array indices in the PostgreSQL protocol parser of Packetbeat can lead to a Denial of Service (DoS) condition. An attacker can exploit this vulnerability by sending specially crafted packets to the server, which, when the pgsql protocol is enabled, can trigger a Go runtime panic. This event causes the Packetbeat process to crash, interrupting network monitoring capabilities. It's crucial for users to ensure that the PostgreSQL protocol is properly configured and to monitor any updates from Elastic regarding this issue.

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