CVE-2026-72683
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
A flaw in Elasticsearch allows an authenticated user with the privileges required to invoke the simulate pipeline API endpoint (https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-ingest-simulate) to submit a request that causes a self-referential data structure to be created. When a specific internal component later processes that structure, the operation recurses without bound and raises a fatal error that is not handled by the surrounding execution path, terminating the affected node process and resulting in a denial of service.
| CWE | CWE-674 |
| Vendor | elastic |
| Product | elasticsearch |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 13, 2026 |
| Last Updated | Aug 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Elastic / Elasticsearch
5.0.0 ≤ 8.19.18 9.3.0 ≤ 9.3.7 9.4.0 ≤ 9.4.3