6.5
Medium
CVE-2026-42399 Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130)
Description
Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated low-privileged user can cause Kibana to consume exponentially increasing amounts of memory by submitting a specially crafted Timelion visualization expression containing deeply chained function calls. The resulting data structure grows without bound, exhausting available memory and causing the Kibana service to crash and become unavailable to all users.
Affected products and versions
Other CVEs of Kibana
The 196 CVEs of Kibana →
CVE-2026-115295
Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to information disclosure via Accessing…
4.3
Medium
CVE-2026-115294
Improper Limitation of a Pathname to a Restricted Directory (CWE-22) in the Kibana Fleet feature can lead to…
7.3
High
CVE-2026-115293
Insertion of Sensitive Information Into Sent Data (CWE-201) in Kibana Observability onboarding can lead to disclosure of…
6.5
Medium
CVE-2026-115292
Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana Machine Learning can lead to information disclosure…
4.3
Medium