CVE-2026-81843
Last modified
CVE-2026-81843 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.
Description
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.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Grafana | Grafana OSS | >= 11.6.0, <= 11.6.16; >= 12.0.0, <= 12.2.10; >= 12.3.0, < 12.4.15 |
| Grafana | Elasticsearch Datasource | >= 12.4.2, < 12.9.6 |
| Grafana | Grafana Enterprise | >= 11.6.0, <= 11.6.16; >= 12.0.0, <= 12.2.10; >= 12.3.0, < 12.4.15 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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