CVE-2026-0528

Improper Input Validation in Metricbeat Leading to Denial of Service

State: Published
Severity: 6.5 Medium
Published: Jan 13, 2026
Updated: Jan 13, 2026
Reserved: Dec 19, 2025

Description

Improper Validation of Array Index (CWE-129) exists in Metricbeat can allow an attacker to cause a Denial of Service through Input Data Manipulation (CAPEC-153) via specially crafted, malformed payloads sent to the Graphite server metricset or Zookeeper server metricset. Additionally, Improper Input Validation (CWE-20) exists in the Prometheus helper module that can allow an attacker to cause a Denial of Service through Input Data Manipulation (CAPEC-153) via specially crafted, malformed metric data.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	elastic

Weaknesses

CWE-129 Improper Validation of Array Index

Affected Products

Product	Versions
MetricbeatElastic	7.0.0 through 7.17.29Affected 8.0.0 through 8.19.9Affected 9.0.0 through 9.1.9Affected 9.2.0 through 9.2.3Affected

References

https://discuss.elastic.co/t/metricbeat-8-19-10-9-1-10-9-2-4-security-update-esa-2026-01/384519

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.