CVE-2026-81843
MEDIUM
MEDIUM
Priority: 0.02
BB Relevance:
63/100
Published: 2026-11-12
Modified: 2026-11-12
First seen: 2026-11-12
Status: active
Attack Surface
Network
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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.
Weakness Classification (1)
Affected Software (7)
| Vendor | Product | Version |
|---|---|---|
| Grafana | Elasticsearch Datasource | 12.4.2 < 12.9.6 |
| Grafana | Grafana Enterprise | 11.6.0 |
| Grafana | Grafana Enterprise | 12.0.0 |
| Grafana | Grafana Enterprise | 12.3.0 < 12.4.15 |
| Grafana | Grafana OSS | 11.6.0 |
| Grafana | Grafana OSS | 12.0.0 |
| Grafana | Grafana OSS | 12.3.0 < 12.4.15 |
References & Advisories (1)
vendor-advisory