Memory Allocation with Excessive Size Value Affecting github.com/elastic/beats/v7/metricbeat/module/prometheus/remote_write package, versions >=8.0.0 <8.19.13>=9.0.0 <9.2.5
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMELASTICBEATSV7METRICBEATMODULEPROMETHEUSREMOTEWRITE-15701705
- published20 Mar 2026
- disclosed19 Mar 2026
- creditUnknown
Introduced: 19 Mar 2026
CVE-2026-26931 Â (opens in a new tab)How to fix?
Upgrade github.com/elastic/beats/v7/metricbeat/module/prometheus/remote_write to version 8.19.13, 9.2.5 or higher.
Overview
Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the remote_write HTTP handler (not enabled by default). An attacker can cause excessive memory allocation by sending specially crafted HTTP requests, potentially leading to service disruption.
Workaround:
For users that are not able to upgrade it is recommended:
- Disable the
remote_write moduleif it is not required for operations:
Remove or comment out the Prometheus
remote_writeconfiguration block inmetricbeat.ymlRestart Metricbeat to apply changes
- Restrict network access using firewall rules or network policies:
Limit access to the
remote_writeendpoint to trusted Prometheus server IP addresses onlyUse
host: "localhost"binding if the Prometheus server runs on the same host