Disclosure summary
Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to Denial of Service via Excessive Allocation (CAPEC-130). Elasticsearch enforces a size limit on the user-supplied metadata field for each individual template resource, but does not limit the total memory used when multiple such resources are retrieved together. A user holding the *manage_index_templates* cluster privilege can register multiple resources each within the individual limit. Retrieving them together materializes all of their metadata values in memory at once, exhausting available heap and causing the affected node to fail with an out-of-memory error, resulting in a denial of service.
Source-reported weakness categories
CWE-770
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2026-102411
Open original source · Updated Oct 09, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| elastic | elasticsearch | * {"versionStartIncluding":"9.5.0","versionEndExcluding":"9.5.3"} |
Original records & references
- NIST NVD record
- CVE Program record
- discuss.elastic.co — Vendor Advisory
PUBLISHED 2026-10-06T16:17:13-04:00
MODIFIED 2026-10-09T11:49:36-04:00
INGESTED 2026-10-10T20:50:46-04:00