CVE-2026-78607CWE-862broken-access-control

CVE-2026-78607

Medium · published September 2, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
24.6
In the wild
Unconfirmed
What it is

Missing Authorization (CWE-862) in the Elasticsearch custom inference service can lead to information disclosure via Privilege Abuse (CAPEC-122). A user holding only inference execution privileges could cause outbound inference traffic to be directed to a destination of their choosing and could cause administrator-provisioned credentials to be exposed.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00328 · 24.6th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-09-02T00:17Z
Affected products (4)
ProductVersionsFixed in
elastic/elasticsearch≥ 8.0.0, < 8.19.198.19.19
elastic/elasticsearch≥ 9.0.0, < 9.3.89.3.8
elastic/elasticsearch≥ 9.4.0, < 9.4.49.4.4
elastic/elasticsearchall versions—
References (1)
https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-9-5-1-security-update-esa-2026-143/390094 · [email protected]
EPSS history
Timeline
  • 03 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 01 SEP 19:20Z
    Missing Authorization in Elasticsearch Leading to Information Disclosure
    cvelistv5