CVE-2026-63136CWE-400denial-of-service

CVE-2026-63136

Medium · published July 22, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
35.2
In the wild
Unconfirmed
What it is

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A user with search privileges can submit a specially crafted search request that causes a data node to exhaust available heap memory, resulting in node unavailability and cluster degradation. An attacker could leverage this vulnerability to cause cluster downtime requiring manual intervention to restore service.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00420 · 35.2th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-07-22T01:16Z
Affected products (3)
ProductVersionsFixed in
elastic/elasticsearch≥ 8.0.0, < 8.19.158.19.15
elastic/elasticsearch≥ 9.0.0, < 9.2.99.2.9
elastic/elasticsearch≥ 9.3.0, < 9.3.49.3.4
References (1)
https://discuss.elastic.co/t/elasticsearch-8-19-15-9-2-9-9-3-4-security-update-esa-2026-60/388559 · [email protected]
EPSS history
Timeline
  • 21 JUL 20:20Z
    Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
    cvelistv5