Kibana 9.4.5, 9.5.1 Security Update (ESA-2026-128)

Improper Privilege Management in Kibana Fleet Leading to Over-Scoped Elastic Agent API Keys Description: Improper Privilege Management CWE-269 in Kibana Fleet can lead to privilege escalation via Privilege Escalation CAPEC-233. An integration policy may optionally declare extra data streams that...

Kibana 9.4.5, 9.5.1 Security Update (ESA-2026-124)

Incorrect Authorization in Kibana Agent Builder Leading to Disclosure and Tampering of Private Agents Kibana Agent Builder determines whether a caller owns a private agent by comparing a stable user identifier when one is recorded, and falling back to a comparison of the username when it is not. ...

Kibana 9.4.5 Security Update (ESA-2026-97)

Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Query Execution on Managed Hosts Authorization Bypass Through User-Controlled Key CWE-639 in Kibana can lead to unauthorized query execution against Elastic Agents that are assigned to a Kibana space the requesting...

Kibana 9.4.5 Security Update (ESA-2026-89)

Incorrect Authorization in Kibana Leading to Disclosure of Elastic Defend Endpoint Event Data The Elastic Security capability that suggests existing field values while a user authors endpoint policy artifacts queries Elastic Defend event data with Kibana's internal Elasticsearch account instead o...

Kibana 9.4.5 Security Update (ESA-2026-82)

Authorization Bypass Through User-Controlled Key in Kibana Agent Builder Leading to Unauthorized Data Modification Kibana Agent Builder A2A JSON-RPC API endpoint derives the identifier of a stored conversation from a user-supplied input, and the ownership check on that identifier does not...

Kibana 9.4.4 Security Update (ESA-2026-83)

Missing Authorization in Kibana Leading to Privilege Escalation and Information Disclosure Kibana Agent Builder does not correctly verify that the requesting user holds the privileges required by a separate Kibana feature before it creates and runs a tool that invokes that feature's functionality...

Kibana 9.3.8, 9.4.4 Security Update (ESA-2026-91)

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 a denial of service via Excessive Allocation CAPEC-130. A user-supplied list of document fields accepted by t...

Kibana 8.19.20, 9.4.5, 9.5.1 Security Update (ESA-2026-129)

Observable Discrepancy in Kibana Fleet Leading to Disclosure of Elastic Agent Elasticsearch API Keys Description: Observable Discrepancy CWE-203 in Kibana Fleet can lead to information disclosure via Excavation CAPEC-116. Fleet removes the Elasticsearch API key value of an enrolled Elastic Agent...

Kibana 8.19.20, 9.4.5, 9.5.1 Security Update (ESA-2026-127)

Incorrect Authorization in Kibana Fleet Leading to Privilege Escalation Description: Incorrect Authorization CWE-863 in Kibana Fleet can lead to privilege escalation via Privilege Abuse CAPEC-122. Fleet restricts some callers to managing integration policies for one specific integration. When an...

Kibana 8.19.20, 9.4.5, 9.5.1 Security Update (ESA-2026-126)

Authorization Bypass Through User-Controlled Key in Kibana Leading to Cross-Space Access to Machine Learning Trained Models Description: Authorization Bypass Through User-Controlled Key CWE-639 in Kibana can lead to unauthorized cross-space access via Accessing Functionality Not Properly...

Kibana 8.19.20 and 9.4.5 Security Update (ESA-2026-99)

Cross-Site Request Forgery in Kibana Leading to Privilege Escalation Cross-Site Request Forgery CWE-352 in Kibana can lead to privilege escalation via Cross Site Request Forgery CAPEC-62. A user who is permitted to create visualizations can save a specially crafted Vega visualization that, when i...

Kibana 8.19.20, and 9.4.5 Security Update (ESA-2026-96)

Missing Authorization in Kibana Leading to Unauthorized Execution of Host Response Actions Missing Authorization CWE-862 in Kibana can lead to unauthorized execution of Osquery and Elastic Defend response actions on managed hosts via Accessing Functionality Not Properly Constrained by ACLs CAPEC-...

Kibana 8.19.20, and 9.4.5 Security Update (ESA-2026-95)

Missing Authorization in Kibana Leading to Unauthorized Execution of Endpoint Response Actions Missing Authorization CWE-862 in Kibana can lead to unauthorized execution of Elastic Defend response actions on managed hosts via Accessing Functionality Not Properly Constrained by ACLs CAPEC-1. A...

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-2026-88)

Missing Authorization in Kibana Leading to Unauthorized Modification of Machine Learning Trained Model Space Assignments A Kibana Machine Learning capability that removes a saved object from the current space accepts machine learning trained models as a target, but it verifies only the privileges...

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-2026-80)

Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service Elasticsearch does not validate a size value taken from a user-supplied input before that value is used to reserve memory for an internal data structure. An authenticated user holding only read privileges ca...

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...

Elasticsearch 8.19.20, 9.4.5, 9.5.1 Security Update (ESA-2026-123)

Use of Out-of-range Pointer Offset in the Elasticsearch Machine Learning Native Inference Process The native inference process that Elasticsearch uses to evaluate uploaded machine learning models accepts a model operation that computes a memory address from an offset supplied inside the model,...

Elasticsearch 8.19.20, 9.4.5, 9.5.1 Security Update (ESA-2026-120)

Memory Allocation with Excessive Size Value in Elasticsearch Highlighting Leading to Denial of Service Elasticsearch does not enforce an upper bound on a user-supplied count accepted by a search highlighting option, and the allocation derived from that count is not accounted against any circuit...

Elasticsearch 8.19.20, 9.4.5, 9.5.1 Security Update (ESA-2026-116)

Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service Memory Allocation with Excessive Size Value CWE-789 in Elasticsearch can lead to denial of service via Excessive Allocation CAPEC-130. An authenticated user holding only read privileges on a single index can...

Elasticsearch 8.19.20, 9.4.5 Security Update (ESA-2026-81)

Uncontrolled Recursion in Elasticsearch Leading to Denial of Service Elasticsearch does not apply its configurable input length restriction to a user-supplied pattern accepted by an intervals query. Compiling a deeply nested pattern drives unbounded recursion that exhausts the thread stack and...

Elasticsearch 8.19.20, 9.4.5 Security Update (ESA-2026-77)

Inefficient Algorithmic Complexity in Elasticsearch Leading to Denial of Service A flaw in Elasticsearch allows a low-privileged authenticated user who can index documents to submit a single small document containing a crafted user-supplied input. Processing one such document occupies a worker...

Elasticsearch 8.19.20, 9.4.5 Security Update (ESA-2026-133)

Uncontrolled Recursion in Elasticsearch Wildcard Matching Leading to Denial of Service Description: Uncontrolled Recursion CWE-674 in the Elasticsearch wildcard matching helper can lead to a denial of service via Excessive Allocation CAPEC-130. The matcher used to resolve wildcard patterns agains...

Elasticsearch 8.19.20, 9.4.5 Security Update (ESA-2026-119)

Uncontrolled Recursion in Elasticsearch Leading to Denial of Service Uncontrolled Recursion CWE-674 in Elasticsearch can lead to denial of service via Input Data Manipulation CAPEC-153. An authenticated user holding only low-privileged index creation permissions can submit a single request...

Elasticsearch 8.19.20, 9.4.5, 9.5.1 Security Update (ESA-2026-118)

Uncontrolled Recursion in Elasticsearch Leading to Denial of Service Uncontrolled Recursion CWE-674 in Elasticsearch can lead to denial of service via Serialized Data with Nested Payloads CAPEC-230. An authenticated user holding only read privileges on a single index can submit one specially...

Elasticsearch 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-75)

Uncontrolled Recursion in Elasticsearch Leading to Denial of Service A flaw in Elasticsearch allows an authenticated user with the privileges required to invoke the simulate pipeline API endpoint to submit a request that causes a self-referential data structure to be created. When a specific...

Elasticsearch 8.18.0, 9.0.0 Security Update (ESA-2026-111)

Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service Memory Allocation with Excessive Size Value CWE-789 in the ES|QL query processing of Elasticsearch can lead to denial of service via Excessive Allocation CAPEC-130. An authenticated user able to submit ES|QL...

Elastic Cloud on Kubernetes 3.5.0 Security Update (ESA-2026-121)

Unintended Proxy or Intermediary in Elastic Cloud on Kubernetes Leading to Cross-Namespace Secret Disclosure The Elastic Cloud on Kubernetes ECK operator reads a list of secret references from an annotation on secrets it manages, and it accepts the namespace recorded in each reference without...

Elastic Cloud on Kubernetes 3.5.0 Security Update (ESA-2026-113)

Cleartext Storage of Sensitive Information in an Environment Variable in Elastic Cloud on Kubernetes Leading to Information Disclosure Cleartext Storage of Sensitive Information in an Environment Variable CWE-526 in Elastic Cloud on Kubernetes ECK can lead to information disclosure via Retrieve...

Kibana 8.19.20, 9.3.5, 9.4.2 Security Update (ESA-2026-136)

Uncaught Exception in Kibana Cases Leading to Denial of Service Uncaught Exception CWE-248 in Kibana Cases can lead to denial of service via Input Data Manipulation CAPEC-153. Malformed link syntax stored in a case comment was not rejected or sanitized when the comment was later formatted for...

Elasticsearch 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-74)

Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service Uncontrolled Resource Consumption CWE-400 in Elasticsearch can lead to denial of service via Exponential Data Expansion CAPEC-197. An authenticated user may submit a specially crafted query to the ES|QL engine that...

Kibana 9.4.4 Security Update (ESA-2026-73)

Missing Authorization in Kibana Leading to Information Disclosure Missing Authorization CWE-862 in Kibana can lead to unauthorized cross-space information disclosure via user-supplied input that circumvents space-level access control. Affected Versions: 9.4.x: All versions from 9.4.0 up to and...