CVE-2026-72685CWE-407

CVE-2026-72685

Medium · published August 14, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
29.4
In the wild
Unconfirmed
What it is

A flaw in Elasticsearch allows a low-privileged authenticated user who can index documents to submit a single small document containing a crafted user-supplied input. Processing one such document occupies a worker thread from a bounded pool for a disproportionate amount of time, degrading the availability of indexing operations on the affected node.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00367 · 29.4th percentile
Weakness
CWE-407 · Inefficient Algorithmic Complexity
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-security-update-esa-2026-77/389500 · [email protected]
EPSS history
Timeline
  • 13 AUG 19:10Z
    Inefficient Algorithmic Complexity in Elasticsearch Leading to Denial of Service
    cvelistv5