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...

Kibana 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-72)

Uncontrolled Resource Consumption in Kibana Leading to Denial of Service Uncontrolled Resource Consumption CWE-400 in Kibana can lead to denial of service via Excessive Allocation CAPEC-130. A low-privileged authenticated user can send a specially crafted request to a Kibana machine learning...

Kibana 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-71)

Uncontrolled Resource Consumption in Kibana Leading to Denial of Service Uncontrolled Resource Consumption CWE-400 in Kibana can lead to denial of service via Excessive Allocation CAPEC-130. An authenticated attacker with low-privilege access can trigger a denial of service condition in Kibana by...

Kibana 9.4.4 Security Update (ESA-2026-70)

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 user-supplied identifiers that reference scheduled query result data from Kibana Spaces the...

Kibana 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-69)

Incorrect Authorization in Kibana Leading to Machine Learning Audit Log Integrity Compromise Incorrect Authorization CWE-863 in Kibana can lead to integrity compromise of Machine Learning audit and notification records via Accessing Functionality Not Properly Constrained by ACLs CAPEC-1. A...

Elasticsearch 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-68)

Uncontrolled Recursion in Elasticsearch Leading to Denial of Service Uncontrolled Recursion CWE-674 in Elasticsearch can lead to denial of service via a specially crafted search request submitted by a low-privileged authenticated user. A user with read-level index access can submit a request that...

Kibana 9.3.8, 9.4.4 Security Update (ESA-2026-67)

Missing Authorization in Kibana Leading to Unauthorized Information Disclosure Missing Authorization CWE-862 in Kibana can lead to unauthorized information disclosure via Privilege Abuse CAPEC-122. A user with limited feature privileges can access workflow execution outputs in their Kibana space...

Kibana 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-66)

Incomplete List of Disallowed Inputs in Kibana Leading to Server-Side Request Forgery Incomplete List of Disallowed Inputs CWE-184 in Kibana can allow an authenticated attacker with access to the Reporting feature to bypass outbound request restrictions configured by an administrator, causing the...

Kibana 9.3.8, 9.4.4 Security Update (ESA-2026-65)

Missing Authorization in Kibana Leading to Unauthorized Access to Cloud Connect Management Functions Missing Authorization CWE-862 in Kibana allows an authenticated user to access and modify Cloud Connect configuration and service settings without the required feature privileges, via direct...

Elasticsearch 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-64)

Reachable Assertion in Elasticsearch Leading to Denial of Service Reachable Assertion CWE-617 in Elasticsearch can lead to denial of service via Input Data Manipulation CAPEC-153. A specially crafted search request containing a null value in a specific query clause causes an internal assertion to...

Kibana 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-63)

Uncontrolled Resource Consumption in Kibana Leading to Denial of Service Uncontrolled Resource Consumption CWE-400 in Kibana can lead to denial of service via Excessive Allocation CAPEC-130. An authenticated low-privileged user can exploit an uncontrolled resource consumption vulnerability in...

Elasticsearch 8.19.15, 9.2.9, 9.3.4 Security Update (ESA-2026-60)

Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service Uncontrolled Resource Consumption CWE-400 in Elasticsearch can lead to denial of service via Excessive Allocation CAPEC-130. A user with search privileges can submit a specially crafted search request that causes a da...

Kibana 8.19.18, 9.3.7, 9.4.3 Security Update (ESA-2026-59)

Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Information Disclosure and Case Attachment Integrity Compromise Authorization Bypass Through User-Controlled Key CWE-639 in Kibana can lead to unauthorized information disclosure and case attachment integrity...

Kibana 9.4.3 Security Update (ESA-2026-58)

Improper Access Control in Kibana Leading to Unauthorized Data Modification and Information Disclosure Improper Access Control CWE-284 in Kibana can lead to unauthorized modification of Entity Analytics Watchlist configuration and potential information disclosure. A low-privileged authenticated...

Elasticsearch 8.19.18, 9.3.7, 9.4.4 Security Update (ESA-2026-57)

Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service Uncontrolled Resource Consumption CWE-400 in Elasticsearch can lead to denial of service via Excessive Allocation CAPEC-130. A low-privileged authenticated user with permission to execute EQL sequence queries against ...

Elasticsearch 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-56)

Incorrect Authorization in Elasticsearch Leading to Information Disclosure Incorrect Authorization CWE-863 in Elasticsearch can allow an authenticated user with limited index privileges to exploit insufficient authorization controls in the ingest simulation feature. By targeting indices they are...

Kibana 9.3.7, 9.4.4 Security Update (ESA-2026-55)

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. An authenticated user can submit a specially crafted request to...

Kibana 9.4.3 Security Update (ESA-2026-54)

Unintended Proxy or Intermediary 'Confused Deputy' in Kibana Leading to Unauthorized Information Exposure Unintended Proxy or Intermediary 'Confused Deputy' CWE-441 in Kibana can lead to unauthorized information exposure via Accessing Functionality Not Properly Constrained by ACLs CAPEC-1. Under...

Kibana 7.17.15, 8.11.1 Security Update (ESA-2026-53)

Improper Output Neutralization for Logs in Kibana Leading to Log Injection Improper Output Neutralization for Logs CWE-117 in Kibana can lead to log injection via Log Injection-Tampering-Forging CAPEC-93. An attacker can supply specially crafted input that is written to log files without proper...

Elasticsearch 7.17.24, 8.15.0 Security Update (ESA-2026-52)

Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service Uncontrolled Resource Consumption CWE-400 in Elasticsearch can lead to a denial of service via Excessive Allocation CAPEC-130. An authenticated user can submit a specially crafted bulk request that causes sustained hi...

Kibana 8.16.3, 8.17.2 Security Update (ESA-2026-51)

Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Data Modification Authorization Bypass Through User-Controlled Key CWE-639 in Kibana can lead to unauthorized data modification via Accessing Functionality Not Properly Constrained by ACLs CAPEC-1. Under certain...

Kibana 8.18.9, 8.19.6, 9.0.8, 9.1.6 Security Update (ESA-2026-50)

Insertion of Sensitive Information into Log File in Kibana Leading to Information Disclosure Insertion of Sensitive Information into Log File CWE-532 in Kibana can lead to information disclosure. When the optional application performance monitoring APM instrumentation is enabled, sensitive reques...

Kibana 8.19.15, 9.3.4 Security Update (ESA-2026-49)

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. An authenticated user can submit a specially crafted bulk deletion...

Kibana 8.19.13, 9.2.7, 9.3.2 Security Update (ESA-2026-46)

Incorrect Authorization in Kibana Leading to Information Disclosure Incorrect Authorization CWE-863 in Kibana can lead to unauthorized information disclosure via Accessing Functionality Not Properly Constrained by ACLs CAPEC-1. Under certain conditions, a low-privileged authenticated user can...

Kibana 8.19.17, 9.3.6, 9.4.3 Security Update (ESA-2026-45)

Improper Input Validation in Kibana Leading to Denial of Service Improper Input Validation CWE-20 in Kibana can lead to a denial of service via Input Data Manipulation CAPEC-153. An authenticated user can submit a specially crafted Fleet policy input that is not correctly validated, which can...

Fleet Server 8.19.11, 9.2.5, 9.3.0 Security Update (ESA-2026-44)

Allocation of Resources Without Limits or Throttling in Fleet Server Leading to Denial of Service Allocation of Resources Without Limits or Throttling CWE-770 in Fleet Server can lead to a denial of service via Excessive Allocation CAPEC-130. An attacker can submit a specially crafted request to ...

Elasticsearch 8.19.17, 9.3.6, 9.4.3 Security Update (ESA-2026-43)

Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service Allocation of Resources Without Limits or Throttling CWE-770 in Elasticsearch can lead to a denial of service via Excessive Allocation CAPEC-130. A user with elevated privileges can submit a special...

Elasticsearch 8.19.17, 9.3.6, 9.4.3 Security Update (ESA-2026-42)

Uncontrolled Recursion in Elasticsearch Leading to Denial of Service Uncontrolled Recursion CWE-674 in Elasticsearch can lead to a denial of service via Excessive Allocation CAPEC-130. An authenticated user can submit a specially crafted query that causes excessive resource consumption while the...

Fleet Server 8.19.15, 9.3.4, 9.4.0 Security Update (ESA-2026-41)

Dependency on Vulnerable Third-Party Component in Fleet Server Leading to Denial of Service Dependency on Vulnerable Third-Party Component CWE-1395 exists in the Go standard library used by Fleet Server that could allow a remote attacker to cause denial of service by sending a specially crafted...

Kibana 9.3.3 Security Update (ESA-2026-40)

Server-Side Request Forgery SSRF in Kibana Leading to Unauthorized Network Access Server-Side Request Forgery CWE-918 in Kibana can allow an authenticated user with connector management privileges to bypass the operator-configured connector allowlist, causing the Kibana server to issue outbound...

Kibana 8.19.16 Security Update (ESA-2026-39)

Uncontrolled Resource Consumption in Kibana Leading to Denial of Service Uncontrolled Resource Consumption CWE-400 in Kibana can lead to denial of service via Excessive Allocation CAPEC-130. An authenticated user with viewer-level access can submit a request containing an oversized input value to...

Kibana Fleet 8.19.16, 9.3.5, and 9.4.2 Security Update (ESA-2026-38)

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...

Kibana 9.2.8, and 9.3.2 Security Update (ESA-2026-37)

Server-Side Request Forgery SSRF in Kibana Leading to Unauthorized Network Access Server-Side Request Forgery CWE-918 in Kibana allows authenticated users with connector management privileges to bypass the operator-configured connection allowlist. By configuring a Webhook connector with a crafted...

Kibana 8.19.16, and 9.3.5 Security Update (ESA-2026-36)

Uncontrolled Resource Consumption in Kibana Leading to Denial of Service 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 memor...