CVE-2026-26932

Improper Validation of Array Index in Packetbeat Leading to Denial of Service

State: Published
Severity: 5.7 Medium
Published: Feb 26, 2026
Updated: Feb 26, 2026
Reserved: Feb 16, 2026

Description

Improper Validation of Array Index (CWE-129) in the PostgreSQL protocol parser in Packetbeat can lead Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted packet causing a Go runtime panic that terminates the Packetbeat process. This vulnerability requires the pgsql protocol to be explicitly enabled and configured to monitor traffic on the targeted port.

Scores

CVSS	Score	Vector	Source
3.1	5.7 Medium	CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	elastic

Weaknesses

CWE-129 Improper Validation of Array Index

Affected Products

Product	Versions
PacketbeatElastic	9.0.0 through 9.2.4Affected 8.0.0 through 8.19.10Affected

References

https://discuss.elastic.co/t/packetbeat-8-19-11-9-2-5-security-update-esa-2026-10/385247

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