# CVE-2026-26932: Improper Validation of Array Index in Packetbeat Leading to Denial of Service

> CVE-2026-26932: Improper Validation of Array Index in Packetbeat Leading to Denial of Service. CVSS 5.7 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-26932
Last updated: 2026-06-17T10:26:24Z

- Published: 2026-02-26 16:59 UTC · Updated: 2026-06-17 10:26 UTC · Assigner: elastic
- CVSS: 5.7 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.51%, 43th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-129

## 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 vendors and products

- Elastic: Packetbeat

## Tracked companies

- [Elastic Cloud](https://rewindex.com/company/elastic-cloud.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-26932)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-26932)
- [https://discuss.elastic.co/t/packetbeat-8-19-11-9-2-5-security-update-esa-2026-10/385247](https://discuss.elastic.co/t/packetbeat-8-19-11-9-2-5-security-update-esa-2026-10/385247)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-26932 · Markdown: https://rewindex.com/cve/CVE-2026-26932.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-26932 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:31.345Z