Kibana 8.19.20, and 9.4.5 Security Update (ESA-2026-92)

Missing Authorization in Kibana Machine Learning Leading to Cross-Space Information Disclosure and Unauthorized Data Modification Description: Missing Authorization CWE-862 in Kibana can lead to cross-space information disclosure and unauthorized data modification via Privilege Abuse CAPEC-122...

Kibana 8.19.20 and 9.4.5 Security Update (ESA-2026-87)

Exposure of Sensitive Information to an Unauthorized Actor in Kibana Leading to Disclosure of Fleet Proxy Credentials A lower privileged user who holds only the privilege to read agent policies can read the entire configuration of a configured Fleet proxy. This would normally require the Fleet...

Kibana 8.19.20, 9.4.5 Security Update (ESA-2026-110)

Improperly Controlled Modification of Dynamically-Determined Object Attributes in Kibana Leading to Unauthorized Data Modification Improperly Controlled Modification of Dynamically-Determined Object Attributes CWE-915 in the case management functionality of Elastic Security in Kibana can lead to...

Kibana 8.19.20, 9.4.5 Security Update (ESA-2026-106)

Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service Allocation of Resources Without Limits or Throttling CWE-770 in Kibana can lead to denial of service via Excessive Allocation CAPEC-130. An authenticated user with read-only privileges to the alerting...

Kibana 8.19.20 and 9.4.5 Security Update (ESA-2026-105)

Authorization Bypass Through User-Controlled Key in Kibana Leading to Information Disclosure Authorization Bypass Through User-Controlled Key CWE-639 in Kibana can lead to information disclosure via Accessing Functionality Not Properly Constrained by ACLs CAPEC-1. An authenticated user who is...

Kibana 8.19.20 and 9.4.5 Security Update (ESA-2026-104)

Inefficient Algorithmic Complexity in Kibana Leading to Denial of Service Description: Inefficient Algorithmic Complexity CWE-407 in Kibana can lead to denial of service via Input Data Manipulation CAPEC-153. A specially crafted, deeply nested expression submitted to a Kibana TSVB visualization i...

Kibana 8.19.20, 9.4.5 Security Update (ESA-2026-100)

Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service Description: Allocation of Resources Without Limits or Throttling CWE-770 in Kibana can lead to denial of service via Excessive Allocation CAPEC-130. A specially crafted, malformed payload submitted to a...

Kibana 8.19.20, and 9.4.4 Security Update (ESA-2026-90)

Incorrect Authorization in Kibana Leading to Unauthorized Deletion of Synthetics Private Locations Description: Incorrect Authorization CWE-863 in Kibana can lead to unauthorized deletion of Synthetics private locations via Accessing Functionality Not Properly Constrained by ACLs CAPEC-1...

Kibana 8.19.20, 9.3.8, and 9.4.5 Security Update (ESA-2026-101)

Uncaught Exception in Kibana Leading to Denial of Service Description: Uncaught Exception CWE-248, resulting from Improper Input Validation CWE-20, in Kibana can lead to denial of service via Input Data Manipulation CAPEC-153. An authenticated user holding only low-privileged access can cause an...

Kibana 8.19.20 and 9.4.5 Security Update (ESA-2026-98)

Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service Allocation of Resources Without Limits or Throttling CWE-770 in Kibana can lead to a denial of service via Excessive Allocation CAPEC-130. A specially crafted request submitted by an authenticated user wit...

Kibana 8.19.19 and 9.4.5 Security Update (ESA-2026-86)

Missing Authorization in Kibana Leading to Cross-User Information Disclosure and Data Tampering The state that Kibana stores for an Observability Onboarding flow is not bound to the user who created the flow, and the routes that read and update that state do not verify ownership. An authenticated...

Kibana 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-108)

Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service Allocation of Resources Without Limits or Throttling CWE-770 in Kibana can lead to denial of service via Excessive Allocation CAPEC-130. An authenticated user who is authorized to manage maintenance window...

Kibana 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-102)

Missing Authorization in Kibana Leading to Information Disclosure Description: Missing Authorization CWE-862 in Kibana can lead to information disclosure via Accessing Functionality Not Properly Constrained by ACLs CAPEC-1. An internal Kibana data retrieval capability used by Elastic Defend...

Kibana 8.19.17, 9.3.6, 9.4.3 Security Update (ESA-2026-94)

Relative Path Traversal in Kibana Fleet Leading to Unauthorized Deletion of Users and Other Resources Description: Relative Path Traversal CWE-23 in Kibana can lead to the unauthorized deletion of Kibana resources via Relative Path Traversal CAPEC-139. Kibana Fleet accepted a user-supplied...

Kibana 8.19.20, 9.4.5 Security Update (ESA-2026-137)

Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service Allocation of Resources Without Limits or Throttling CWE-770 in Kibana can lead to denial of service via Excessive Allocation CAPEC-130. A query expression accepted by a connector reporting operation was...

Fleet Server 8.19.20, 9.4.5, 9.5.1 Security Update (ESA-2026-93)

Improper Control of Generation of Code in Fleet Server Leading to Code Injection Description: Improper Control of Generation of Code 'Code Injection' CWE-94 in Fleet Server can lead to the execution of attacker-supplied script content via Code Injection CAPEC-242. Kibana accepted an identifier fo...

Fleet Server 8.19.20, 9.4.5, 9.5.1 Security Update (ESA-2026-112)

Authorization Bypass Through User-Controlled Key in Fleet Server Leading to Information Disclosure Authorization Bypass Through User-Controlled Key CWE-639 in Fleet Server can lead to information disclosure via Manipulating User-Controlled Variables CAPEC-77. The authorization decision for artifa...

Elasticsearch 8.19.20, 9.4.5 Security Update (ESA-2026-76)

Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service A flaw in Elasticsearch allows an authenticated user holding only read privileges to submit a small search request containing a crafted user-supplied input. Processing that input causes a specific...

Elasticsearch 8.19.20, 9.4.5, 9.5.1 Security Update (ESA-2026-79)

Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service A flaw in Elasticsearch allows a low-privileged authenticated user to submit a single small request containing a forged opaque identifier. Elasticsearch decodes and deserializes the identifier before...

Elasticsearch 8.19.20, 9.4.5, 9.5.1 Security Update (ESA-2026-78)

Uncontrolled Recursion in Elasticsearch Leading to Denial of Service A flaw in Elasticsearch allows a low-privileged authenticated user to submit a single request containing a crafted user-supplied input. A specific internal component validates the input using a recursive routine and applies no...