Improper Validation of Array Index in Metricbeat OSS - CVE-2026-0528
Published: January 13, 2026
Vulnerability identifier: #VU121295
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-0528
CWE-ID: CWE-129
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation in the Prometheus helper module. A remote attacker can send specially crafted payloads to the Graphite server metricset or Zookeeper server metricset and perform a denial of service attack.
Affected software
Metricbeat OSS
How to mitigate CVE-2026-0528
Install updates from vendor's website.
Metricbeat OSS - addressed in versions 8.19.10, 9.1.10, 9.2.4