CVE-2026-26931mediumCWE-789

CVE-2026-26931: medium-severity vulnerability in Elastic Metricbeat

Memory Allocation with Excessive Size Value in Metricbeat Leading to Denial of Service

Published

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.7epss 0.2%
Memory Allocation with Excessive Size Value (CWE-789) in the Prometheus remote_write HTTP handler in Metricbeat can lead Denial of Service via Excessive Allocation (CAPEC-130).
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
Elastic · Metricbeat
Related CVEs — Elastic Metricbeat

In the same product, most dangerous first.