What is CVE-2026-26932?

CVE-2026-26932 is a medium-severity vulnerability in Elastic Packetbeat, classified under Improper Validation of Array Index. CVSS score: 5.7/10. Published 2026-02-26.

How severe is CVE-2026-26932?

Medium severity. CVSS v3 base score is 5.7 out of 10.

Vulnerability in Elastic Packetbeat

CVE-2026-26932

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.

EPSS: 0.005 (37.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Elastic Packetbeat — versions 9.0.0, 8.0.0
Elasticsearch Packetbeat

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index

References

security@elastic.co (Vendor Advisory)

Frequently asked questions

What is CVE-2026-26932?: CVE-2026-26932 is a medium-severity vulnerability in Elastic Packetbeat, classified under Improper Validation of Array Index. CVSS score: 5.7/10. Published 2026-02-26.
How severe is CVE-2026-26932?: Medium severity. CVSS v3 base score is 5.7 out of 10.