CVE-2026-72647CWE-674

CVE-2026-72647

Medium · published August 14, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
35.3
In the wild
Unconfirmed
What it is

Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via Serialized Data with Nested Payloads (CAPEC-230). An authenticated user holding only read privileges on a single index can submit one specially crafted search request whose deeply nested structure is processed without a depth limit, exhausting the thread stack and terminating the affected node.

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 · 35.3th percentile
Weakness
CWE-674 · Uncontrolled Recursion
Published
2026-08-14T00:17Z
Affected products (2)
ProductVersionsFixed in
elastic/elasticsearch≥ 8.0.0, < 8.19.208.19.20
elastic/elasticsearch≥ 9.0.0, < 9.4.59.4.5
References (1)
https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-9-5-1-security-update-esa-2026-118/389497 · [email protected]
EPSS history
Timeline
  • 13 AUG 19:13Z
    Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
    cvelistv5