TI-2026-21419 Aliases CVE-2026-26932 GHSA-fg9r-q7mv-mcrw

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

LOW 33CWE-129Published 2026-02-26 · Updated 2026-02-26

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-129 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00508 43rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Elastic	Packetbeat	9.0.0 – 9.2.4; 8.0.0 – 8.19.10	—	No fix listed	CNA

Packetbeat VendorElastic Affected 9.0.0 – 9.2.4; 8.0.0 – 8.19.10 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:elasticsearch:packetbeat::::::::	8.0.0 to before 8.19.11; 9.0.0 to before 9.2.5	Vulnerable	Elasticsearch

cpe:2.3:a:elasticsearch:packetbeat:*:*:*:*:*:*:*:* Versions 8.0.0 to before 8.19.11; 9.0.0 to before 9.2.5 Vulnerable ·Elasticsearch

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-26932
2026-10-03 Alias added: GHSA-fg9r-q7mv-mcrw
2026-10-25 EPSS moved to the below the 50th percentile

References

Advisory 1

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

TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
TI-2015-01295 The Groovy scripting engine in Elasticsearch before 1.3.8 and 1.4.x before 1.4.3 allows… KEVCVSS 3.1CRITICAL 9.8
TI-2014-02491 The default configuration in Elasticsearch before 1.2 enables dynamic scripting, which… KEVCVSS 3.1HIGH 8.1
TI-2018-12328 Kibana versions before 6.4.3 and 5.6.13 contain an arbitrary file inclusion flaw in the… CVSS 3.0CRITICAL 9.8
TI-2023-15037 Elasticsearch StackOverflow vulnerability CVSS 3.1HIGH 7.5
TI-2021-05135 Information disclosure in Elasticsearch CVSS 3.1MEDIUM 6.5

See all 414 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences