CVE-2026-81843 (GCVE-0-2026-81843)

Vulnerability from cvelistv5 – Published: 2026-11-12 17:40 – Updated: 2026-11-12 17:40
VLAI
Title
Memory exhaustion denial of service in Elasticsearch data source index patterns
Summary
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.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
GRAFANA CNA under the mitre root
CNA scorecard C 73/100 over 59 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Grafana Grafana OSS Affected: 11.6.0 , ≤ 11.6.16 (semver)
Affected: 12.0.0 , ≤ 12.2.10 (semver)
Affected: 12.3.0 , < 12.4.15 (semver)
guessed Create a notification for this product.
Grafana Elasticsearch Datasource Affected: 12.4.2 , < 12.9.6 (semver)
guessed Create a notification for this product.
Grafana Grafana Enterprise Affected: 11.6.0 , ≤ 11.6.16 (semver)
Affected: 12.0.0 , ≤ 12.2.10 (semver)
Affected: 12.3.0 , < 12.4.15 (semver)
guessed Create a notification for this product.
Date Public
2026-11-10 00:00
Credits
khanmarshal (Researcher)
Show details on NVD website
To clipboard 

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}



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