EUVD-2026-58288

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. A username is not unique across Elasticsearch authentication realms, so two distinct principals that...

EUVD-2026-58283

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 crafted search request whose deeply nested structure is processed without...

CVE-2026-72655 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 unauthorized modification of case data by an authenticated user who has not been granted case editing privileges, via Manipulating...

CVE-2026-72655

The CVE-2026-72655 issue concerns Kibana’s case management API in Elastic Security, where Object attributes accepted by the API could be modified by an authenticated user lacking case editing privileges, due to insufficient authorization checks compared to the UI. This CWE-915 vulnerability could...

CVE-2026-72655 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 unauthorized modification of case data by an authenticated user who has not been granted case editing privileges, via Manipulating...

CVE-2026-72663 Inefficient Algorithmic Complexity in Kibana Leading to Denial of Service

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 is evaluated with a worst-case cost that grows disproportionately with the size of the...

CVE-2026-72675 Missing Authorization in Kibana Machine Learning Leading to Cross-Space Information Disclosure and Unauthorized Data Modification

Missing Authorization CWE-862 in Kibana can lead to cross-space information disclosure and unauthorized data modification via Privilege Abuse CAPEC-122. Kibana Machine Learning carries out its Elasticsearch operations with elevated internal permissions and relies on a per-request space filter to...

CVE-2026-72675

Missing Authorization CWE-862 in Kibana can lead to cross-space information disclosure and unauthorized data modification via Privilege Abuse CAPEC-122. Kibana Machine Learning carries out its Elasticsearch operations with elevated internal permissions and relies on a per-request space filter to...

CVE-2026-72675 Missing Authorization in Kibana Machine Learning Leading to Cross-Space Information Disclosure and Unauthorized Data Modification

Missing Authorization CWE-862 in Kibana can lead to cross-space information disclosure and unauthorized data modification via Privilege Abuse CAPEC-122. Kibana Machine Learning carries out its Elasticsearch operations with elevated internal permissions and relies on a per-request space filter to...

CVE-2026-72672 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 of the account of the requesting user. Only Kibana feature privileges are verified, and the...

CVE-2026-72669 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 user who holds only generic read access to the space can therefore discover the onboarding flow...

CVE-2026-72669

CVE-2026-72669 affects Kibana Observability Onboarding flow state handling where ownership is not enforced. The vulnerability allows an authenticated user with basic space access to view others’ onboarding flows, read their state, and write arbitrary progress data, potentially causing the owner’s...

CVE-2026-72669 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 user who holds only generic read access to the space can therefore discover the onboarding flow...

CVE-2026-72669 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 user who holds only generic read access to the space can therefore discover the onboarding flow...

EUVD-2026-58255

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. This allows privilege escalation and could lead to disclosure of sensitive information th...

CVE-2026-72680

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 distinguish between a conversation that does not exist and one that exists but belongs to another user. As a result, an...

CVE-2026-72680 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 distinguish between a conversation that does not exist and one that exists but belongs to another user. As a result, an...

CVE-2026-72680

Summary: CVE-2026-72680 affects Kibana Agent Builder via the A2A JSON-RPC API. An authenticated user with only read privileges can supply a user-owned identifier for a conversation that already exists in the same space and cause that conversation to be replaced and reassigned to the attacker, res...

CVE-2026-72680 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 distinguish between a conversation that does not exist and one that exists but belongs to another user. As a result, an...

CVE-2026-72683 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 https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-ingest-simulate to submit a request that causes a self-referential data structure to be created. Whe...