CVE-2026-26931
Medium
Description
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).
SeverityMedium
CVSS5.7
Exploit probability—
ProductElastic Metricbeat
PublishedMar 19, 2026
First seenMar 19, 2026
Weakness typeCWE-789CWE-789
How to fix
Update
- elastic metricbeat8.19.13, 9.2.5 or later
- github.com/elastic/beats/v77.0.0-alpha2.0.20260112100137-de072c4e371e or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| elastic metricbeat | 8.0.0 ≤ v < 8.19.13, 9.0.0 ≤ v < 9.2.5 | 8.19.13, 9.2.5 |
| github.com/elastic/beats/v7Go | v < 7.0.0-alpha2.0.20260112100137-de072c4e371e | 7.0.0-alpha2.0.20260112100137-de072c4e371e |
| github.com/elastic/beatsGo | No range specified | — |
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