Improper Input Validation in Kibana Fleet Leading to Privilege Escalation (Elastic Kibana)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.26 % · percentile 18 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- elastic
- NVD status
- Analyzed
Description
Improper Input Validation (CWE-20) in the Kibana Fleet agent policy management feature can lead to privilege escalation. An authenticated user with Fleet management privileges can manipulate agent policy configuration by injecting values into a configuration override mechanism that is not adequately validated. An attacker can cause Elastic Agents to be issued API keys with elevated Elasticsearch privileges, potentially granting unauthorized read and write access to sensitive Elasticsearch security indices beyond what is intended for the Fleet management role.
Weaknesses (CWE)
- CWE-20 — Improper Input Validation
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N | elastic |
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N | NVD · security@elastic.co (Secondary) |
European references
- ENISA EUVD · EUVD-2026-33033
- GCVE · GCVE-0-2026-49095
CERT-FR advisories
- CERTFR-2026-AVI-0661 — Multiples vulnérabilités dans Elastic Kibana · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*≥ 8.0.0 < 8.19.16cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*≥ 9.0.0 < 9.3.5cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*≥ 9.4.0 < 9.4.2
Affected products
| Product | Versions |
|---|---|
| Elastic · Kibana | affected 9.0.0 ≤ 9.3.4 ; affected 9.4.0 ≤ 9.4.1 ; affected 8.0.0 ≤ 8.19.15 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |