GHSA-5vrw-qjxw-89r5

Metricbeat Allocates Memory with Excessive Size Value Leading to Denial of Service

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-26931

Packages

Ecosystem	Package	Affected	Fixed in
Go	github.com/elastic/beats/v7	< 7.0.0-alpha2.0.20260112100137-de072c4e371e	7.0.0-alpha2.0.20260112100137-de072c4e371e

Details

As written in the advisory (Markdown source, shown as plain text).

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).

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2026-26931 advisory
https://github.com/elastic/beats/commit/de072c4e371eafeb2a42d65b9ad513f666e4ffd7 web
https://discuss.elastic.co/t/metricbeat-8-19-13-9-2-5-security-update-esa-2026-09/385532 web
https://github.com/elastic/beats package