CVE-2026-63263
Fixed in a distro release EPSS <1%CVSS 6.5
Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.
Products: Elasticsearch
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | elasticsearch-9.1 | no fix |
| Chainguard | elasticsearch-9.2 | no fix |
| Chainguard | ruby3.2-elasticsearch | 9.5.0-r0 |
| Chainguard | ruby3.3-elasticsearch | 9.5.0-r0 |
| Chainguard | ruby3.4-elasticsearch | 9.5.0-r1 |
| Chainguard | ruby3.4-elasticsearch | 9.5.0-r0 |
| Chainguard | ruby4.0-elasticsearch | 9.5.0-r0 |
| Wolfi | ruby3.2-elasticsearch | 9.5.0-r0 |
| Wolfi | ruby3.3-elasticsearch | 9.5.0-r0 |
| Wolfi | ruby3.4-elasticsearch | 9.5.0-r1 |
| Wolfi | ruby3.4-elasticsearch | 9.5.0-r0 |
| Wolfi | ruby4.0-elasticsearch | 9.5.0-r0 |