BIT-elasticsearch-2026-72687

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/elasticsearch/BIT-elasticsearch-2026-72687.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-elasticsearch-2026-72687
Aliases
Published
2026-08-19T08:39:51Z
Modified
2026-09-08T08:47:24Z
Summary
Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service
Details

A flaw in Elasticsearch allows a low-privileged authenticated user to submit a single small request containing a forged opaque identifier. Elasticsearch decodes and deserializes the identifier before confirming that it was legitimately issued by the cluster, and a size value carried inside the identifier drives an allocation that is neither capped nor accounted for by the available memory-usage controls. The resulting out-of-memory condition is fatal and terminates the affected node process, resulting in a denial of service.

Database specific
{
    "cpes":  [
        "cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:maven:*:*"
    ],
    "severity":  "Medium"
}
References

Affected packages

Bitnami / elasticsearch

Package

Name
elasticsearch
Purl
pkg:bitnami/elasticsearch

Severity

  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
8.0.0
Fixed
8.19.20
Introduced
9.0.0
Fixed
9.4.5
Introduced
9.5.0
Fixed
9.5.1

Database specific

source
"https://github.com/bitnami/vulndb/tree/main/data/elasticsearch/BIT-elasticsearch-2026-72687.json"