# Packetbeat 8.19.11, 9.2.5 Security Update (ESA-2026-10)

**URL:** <https://discuss.elastic.co/t/packetbeat-8-19-11-9-2-5-security-update-esa-2026-10/385247>\
**Category:** Security Announcements\
**Created:** [February 26, 2026, 4:51pm UTC](https://discuss.elastic.co/t/packetbeat-8-19-11-9-2-5-security-update-esa-2026-10/385247 "2026-02-26T16:51:41Z")\
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**Author:** ![ismisepaul](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ismisepaul/32/102235_2.png) [@ismisepaul](https://discuss.elastic.co/u/ismisepaul)\
**Post date:** [February 26, 2026, 4:51pm UTC](https://discuss.elastic.co/t/packetbeat-8-19-11-9-2-5-security-update-esa-2026-10/385247/1 "2026-02-26T16:51:41Z")

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

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 Versions:**

- 8.x: All versions from 8.0.0 up to and including 8.19.10
- 9.x: All versions from 9.0.0 up to and including 9.2.4

**Affected Configurations:**  
This vulnerability only affects Packetbeat deployments where: The pgsql protocol type has been explicitly configured in `packetbeat.yml` and the Packetbeat instance is monitoring network traffic on an interface where PostgreSQL protocol traffic is present

**Solutions and Mitigations:**

The issue is resolved in version 8.19.11, 9.2.5.

**For Users that Cannot Upgrade:**

Disable the pgsql protocol parser by removing or commenting out the pgsql configuration in `packetbeat.yml`

**Indicators of Compromise (IOC)**

Packetbeat process terminations with panic messages containing:

- "runtime error: index out of range"
- "panic: runtime error"
- Stack traces referencing packetbeat/protos/pgsql/parse.go

**Severity:** CVSSv3.1: Medium ( 5.7 ) - CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H  
**CVE ID** : CVE-2026-26932  
**Problem Type:** CWE-129 - Improper Validation of Array Index  
**Impact:** CAPEC-153 - Input Data Manipulation

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_[View the full topic](https://discuss.elastic.co/t/packetbeat-8-19-11-9-2-5-security-update-esa-2026-10/385247)._