CVE-2026-63144
Fixed in a distro release EPSS <1%CVSS 6.5
Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via a specially crafted search request submitted by a low-privileged authenticated user. A user with read-level index access can submit a request that triggers unbounded recursive processing within the Elasticsearch query evaluation component, causing a fatal error that terminates the affected node. In single-node deployments, this results in complete service outage; in multi-node clusters, it causes repeated node restarts and sustained availability degradation.
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 |