CVE-2026-78583CWE-863broken-access-control

CVE-2026-78583

High · published September 3, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
31.4
In the wild
Unconfirmed
What it is

Incorrect Authorization (CWE-863) in Kibana can lead to privilege escalation via Input Data Manipulation (CAPEC-153). Elasticsearch cluster privilege declarations originating from integration packages were not validated before being used to mint credentials for enrolled Elastic Agents. A user holding Fleet management privileges could therefore cause every Elastic Agent on a targeted policy to receive a credential carrying arbitrarily elevated Elasticsearch cluster privileges, up to and including full cluster administration.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00386 · 31.4th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-09-03T23:17Z
Affected products (3)
ProductVersionsFixed in
elastic/kibana≥ 8.0.0, < 8.19.218.19.21
elastic/kibana≥ 9.0.0, < 9.4.69.4.6
elastic/kibana≥ 9.5.0, < 9.5.39.5.3
References (1)
https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-3-security-update-esa-2026-140/390158 · [email protected]
EPSS history
Timeline
  • 05 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 03 SEP 18:35Z
    Incorrect Authorization in Kibana Leading to Privilege Escalation
    cvelistv5