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CVE Watch12 nov 2026

CVE-2026-81843

Grafana is an open-source platform for monitoring and observability. When an Elasticsearch data source is configured with a time-based inde

CVSS

6.5

Medio

EPSS

—

KEV

—

Exploit Today

—

0-100

Publicado: 12 nov 2026 · Última mod.: 12 nov 2026 · CWE-770

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Grafana is an open-source platform for monitoring and observability. When an Elasticsearch data source is configured with a time-based index pattern, Grafana generated one index name for every interval in the requested query time range without any upper limit. A user with permission to query the data source, which includes users holding only the Viewer role in a default configuration, could submit a single small query with an extreme time range and cause the server to allocate memory until it was terminated. The allocation occurred before any request was sent to Elasticsearch, so the condition applied whether or not the Elasticsearch cluster was reachable. Data sources configured with a static index name are not affected.

Referencias oficiales

grafana.comhttps://grafana.com/security/security-advisories/cve-2026-81843

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