What’s Vulnerable › Vulnerabilities
CVE-2026-26931: Memory Allocation with Excessive Size Value in Metricbeat Leading to Denial of Service
- Severity: medium (CVSS 5.7 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-03-19 · updated 2026-09-04
- Weakness: CWE-789
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).
Affected products
- Elastic Metricbeat: from 8.0.0 before 8.19.13; from 9.0.0 before 9.2.5 — fixed in 8.19.13, 9.2.5
How to fix
Upgrade to a fixed version: Elastic Metricbeat 8.19.13, 9.2.5. Check the vendor advisory for mitigations.
References
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