Vulnerability · Published Feb 26, 2026 · Assigned by elastic
CVE-2026-26932Improper Validation of Array Index in Packetbeat Leading to Denial of Service
Medium 5.7
In plain English
A medium-severity security flaw in Packetbeat from Elastic. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Elastic | Packetbeat | 9.0.0 – through 9.2.48.0.0 – through 8.19.10 |
Weakness: CWE-129 · Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H