CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCVE-2026-81843 Memory exhaustion denial of service in Elasticsearch data source index patterns
Medium (6.5) in grafana. EPSS 0.2% estimated probability of exploitation activity in the next 30 days.
On this page
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
- EPSS
- 0.2% estimated probability of exploitation activity in the next 30 days; 15th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CWE
- CWE-770 Allocation of Resources Without Limits or Throttling
- Published
- Modified
- Assigned by
- GRAFANA (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Affected
- grafana:elasticsearch datasource
- grafana:grafana enterprise
- grafana:grafana oss
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Grafana OSS | from 11.6.0 through 11.6.16 |
| Grafana OSS | from 12.0.0 through 12.2.10 |
| Grafana OSS | from 12.3.0 before 12.4.15 |
| Grafana Elasticsearch Datasource | from 12.4.2 before 12.9.6 |
| Grafana Enterprise | from 11.6.0 through 11.6.16 |
| Grafana Enterprise | from 12.0.0 through 12.2.10 |
| Grafana Enterprise | from 12.3.0 before 12.4.15 |
Attack patterns (CAPEC)
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits. More on the page of CWE-770 (20).