CVE-2026-49095: Improper Input Validation in Kibana Fleet Leading to Privilege Escalation
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-49095?
CVE-2026-49095 has a severity rating of high, specifically a CVSS score of 7.2.
How do I fix CVE-2026-49095?
To mitigate CVE-2026-49095, it's recommended to update to the latest version of Elastic Kibana that addresses the improper input validation issue.
What is the impact of CVE-2026-49095?
CVE-2026-49095 allows authenticated users with Fleet management privileges to escalate their privileges by injecting malicious configurations.
Which versions of Elastic Kibana are affected by CVE-2026-49095?
CVE-2026-49095 affects specific previous versions of Elastic Kibana, particularly in the Fleet agent policy management feature.
Is there a workaround for CVE-2026-49095?
While the primary solution is to update Kibana, restricting access to Fleet management features can serve as a temporary workaround until a patch is applied.