Memory Allocation Vulnerability in Metricbeat by Elastic
CVE-2026-26931

5.7MEDIUM

Key Information:

Vendor

Elastic
Status
Metricbeat
Vendor
CVE Published:
19 March 2026

What is CVE-2026-26931?

A vulnerability exists within the Metricbeat remote_write HTTP handler due to improper memory allocation that accepts excessively large size values. This flaw can lead to Denial of Service (DoS) conditions by exploiting memory resources through excessive allocation. Attackers could potentially disrupt service availability, thus impacting operations reliant on metric data collection and analysis. Users are advised to apply the latest security updates to mitigate this risk.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

Metricbeat 8.0.0 <= 8.19.12

References

https://discuss.elastic.co/t/metricbeat-8-19-13-9-2-5-sec...

CVSS V3.1

Score:
5.7
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
.