Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to Denial of Service via a specially crafted, deeply nested request submitted to the aggregation feature of the search API. Elasticsearch contains an uncontrolled recursion weakness in its search aggregation processing. An authenticated user with read access to a single index can submit a specially crafted request containing deeply nested aggregation definitions. Processing this request triggers unbounded recursive execution that exhausts the server process's available resources, causing the affected node to terminate. The node does not recover automatically and requires manual intervention to restore service.
CVE-2026-103006
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-103006
Elasticsearch
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Elastic",
"product": "Elasticsearch",
"versions": [
{
"status": "affected",
"version": "8.0.0",
"versionType": "semver",
"lessThanOrEqual": "8.19.20"
},
{
"status": "affected",
"version": "9.0.0",
"versionType": "semver",
"lessThanOrEqual": "9.4.5"
},
{
"status": "affected",
"version": "9.5.0",
"versionType": "semver",
"lessThanOrEqual": "9.5.1"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-103006
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #9567 · Revision 1
- Added to Heist Feed
- Publisher date