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...

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 9.3.7, 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 8.19.10, 9.1.10, 9.2.4 Security Update (ESA-2026-04)

Allocation of Resources Without Limits or Throttling in Kibana Fleet ESA-2026-04 Allocation of Resources Without Limits or Throttling CWE-770 in Kibana Fleet can lead to Excessive Allocation CAPEC-130 via a specially crafted bulk retrieval request. This requires an attacker to have low-level...

Kibana 9.3.1 Security Update (ESA-2026-17)

Improper Neutralization of Special Elements Used in a Template Engine in Kibana Workflows Leading to Server-Side Request Forgery SSRF Improper Neutralization of Special Elements Used in a Template Engine CWE-1336 exists in Workflows in Kibana which could allow an attacker to read arbitrary files...

Kibana 8.19.8, 9.1.8, and 9.2.2 Security Update (ESA-2025-28)

Kibana Cross-site Scripting via the Integration Package Upload Functionality ESA-2025-28 Improper neutralization of input during web page generation 'Cross-site Scripting' CWE-79 allows an authenticated user to render an HTML page within a user’s browser via the integration package upload...

Logstash 5.0.0-6.8.20 and 7.0.0-7.16.0: Log4j CVE-2021-44228, CVE-2021-45046 remediation

Note — These instructions only apply if you are running Logstash 5.0.0 - 6.8.20, or 7.0.0 - 7.16.0. If you are running an older version of Logstash, or a version of Logstash = 6.8.21 in the 6.x series or = 7.16.1 in the 7.x series, these instructions do not apply. Please follow the guidance in ma...

APM Server 8.19.20, 9.4.5, 9.5.1 Security Update (ESA-2026-152)

Improper Handling of Highly Compressed Data in APM Server Leading to Persistent Denial of Service Improper Handling of Highly Compressed Data CWE-409 in APM Server can lead to a persistent denial of service via Excessive Allocation CAPEC-130. An authenticated user with write access to source map...

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...

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 8.19.16, 9.3.5, 9.4.1 Security Update (ESA-2026-32)

Uncontrolled Resource Consumption in Kibana Leading to Denial of Service Uncontrolled Resource Consumption CWE-400 in Kibana can lead to a denial of service via Excessive Allocation CAPEC-130. An authenticated user holding a low-privileged role can submit a specially crafted, oversized payload to...

Kibana 8.19.12, 9.2.6, 9.3.1 Security Update (ESA-2026-13)

Improper Input Validation in Kibana Leading to Denial of Service Improper Input Validation CWE-20 in the internal Content Connectors search endpoint in Kibana can lead Denial of Service via Input Data Manipulation CAPEC-153 Affected Versions: 8.x: All versions from 8.4.0 up to and including 8.19....

Kibana 8.19.7, 9.1.7, and 9.2.1 Security Update (ESA-2025-39)

Kibana Improper Authorization ESA-2025-39 Improper Authorization CWE-285 in Kibana can lead to privilege escalation CAPEC-233 by allowing an authenticated user to bypass intended permission restrictions via a crafted HTTP request. This allows an attacker who lacks the 'live queries - read'...

Elasticsearch 8.19.9, 9.1.9, and 9.2.3 Security Update (ESA-2025-33)

Elasticsearch Allocation of Resources Without Limits or Throttling ESA-2025-33 Allocation of Resources Without Limits or Throttling CWE-770 in Elasticsearch can allow a low-privileged authenticated user to cause Excessive Allocation CAPEC-130 causing a persistent denial of service OOM crash via...

Kibana 8.18.8, 8.19.5, 9.0.8, 9.1.5 Security Update (ESA-2025-17)

Kibana Stored Cross-Site-ScriptingXSS ESA-2025-17 Improper Validation of Specified Type of Input in Kibana can lead to stored Cross-Site-Scripting XSS Affected Versions: 7.x: All versions from 7.0.0 and up to and including 7.17.29 8.x: All versions from 8.0.0 and up to and including 8.18.7 8.19.x...

Kibana 8.19.21, 9.4.6 Security Update (ESA-2026-155)

Missing Authorization in Kibana Entity Store Leading to Unauthorized API Key Creation Missing Authorization CWE-862 in the Kibana Entity Store feature can lead to unauthorized credential creation via Accessing Functionality Not Properly Constrained by ACLs CAPEC-1. An authenticated user holding...

Kibana 9.4.6, 9.5.2 Security Update (ESA-2026-130)

Incorrect Authorization in Kibana Leading to Unauthorized Disabling of Privilege Monitoring Incorrect Authorization CWE-863 in Kibana Entity Analytics can lead to a loss of security monitoring via Accessing Functionality Not Properly Constrained by ACLs CAPEC-1. An authenticated user holding only...

8.19.16, 9.3.5 Security Update (ESA-2026-33)

Operation on a Resource after Expiration or Termination in Kibana Leading to Unauthorized File Access Operation on a Resource after Expiration or Termination CWE-672 in Kibana can lead to unauthorized information disclosure. A logic error in how expiration timestamps were validated allowed a...

Elastic OTel Java 1.10.0 Security Update (ESA-2026-22 / GHSA-xw7x-h9fj-p2c7)

Dependency on Vulnerable Third-Party Component in Elastic OTel Java Leading to Remote Code Execution Dependency on Vulnerable Third-Party Component CWE-1395 exists in Elastic OTel Java via a dependency on OpenTelemetry Java instrumentation library. This vulnerability could allow an attacker to...

Elastic Defend 8.19.6, 9.1.6, and 9.2.0 Security Update (ESA-2025-23)

Elastic Defend Improper Preservation of Permissions ESA-2025-23 Improper preservation of permissions in Elastic Defend on Windows hosts can lead to arbitrary files on the system being deleted by the Defend service running as SYSTEM. In some cases, this could result in local privilege escalation...

Elasticsearch 8.18.6, 8.19.3, 9.0.6, and 9.1.3 Security Update (ESA-2025-14) (CVE-2025-54988)

Elasticsearch XML external entity XXE injection in Apache Tika ESA-2025-14 On August 20, 2025, CVE-2025-54988 in Apache Tika PDF parser module was announced, disclosing an XML External Entity injection flaw in the Apache Tika tika-parser-pdf-module. This vulnerability allows an attacker to provid...

Kibana 7.17.19 and 8.13.0 Security Update (ESA-2024-47)

Kibana Unrestricted Upload of File ESA-2024-47 Unrestricted file upload in Kibana allows an authenticated attacker to compromise software integrity by uploading a crafted malicious file due to insufficient server-side validation. Affected Versions: 7.17.0 to 7.17.18 and 8.0.0 to 8.12.3 Solutions...

Fleet Server 8.15.0 Security Update ( ESA-2024-31)

Fleet Server sensitive information exposure via logs ESA-2024-31 An issue was identified in Fleet Server where Fleet policies that could contain sensitive information were logged on INFO and ERROR log levels. The nature of the sensitive information largely depends on the integrations enabled...

APM Server 8.14.0 Security Update (ESA-2024-09)

APM Server - Uncontrolled Resource Consumption through HTTP/2 endpoints - CVE-2023-45288 ESA-2024-09 On April 4, 2024, the Go Project announced CVE-2023-45288, which can lead to CPU exhaustion as an attacker can cause an HTTP/2 endpoint to read arbitrary amounts of header data. In an on-prem...

Kibana 8.11.1 Security Update (ESA-2023-25)

Kibana Insertion of Sensitive Information into Log File ESA-2023-25 An issue was discovered by Elastic whereby sensitive information may be recorded in Kibana logs in the event of an error. Elastic has released Kibana 8.11.1 which resolves this issue. The error message recorded in the log may...

Fleet Server 8.19.16, 9.3.5, 9.4.2 Security Update (ESA-2026-164)

Incorrect Authorization in Fleet Server Leading to Denial of Service of Agent Upload Operations Incorrect Authorization CWE-863 in Fleet Server can lead to a denial of service of agent upload operations via Privilege Abuse CAPEC-122. Fleet Server does not correctly verify session ownership during...

Kibana 8.19.18, 9.4.3 Security Update (ESA-2026-157)

Stored Path Traversal in Kibana Leading to Unauthorized Deletion of Internal Resources Improper Limitation of a Pathname to a Restricted Directory 'Path Traversal' CWE-22 in the Kibana Fleet feature can lead to the unauthorized deletion of internal resources via Path Traversal CAPEC-126. A...

Elastic Cloud on Kubernetes 3.5.0 Security Update (ESA-2026-145)

Incorrect Authorization in Elastic Cloud on Kubernetes Leading to Unauthorized Modification of Data Incorrect Authorization CWE-863 in Elastic Cloud on Kubernetes ECK can lead to unauthorized modification of data via Metadata Spoofing CAPEC-690. An actor holding limited Kubernetes permissions...

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...

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 ...

Packetbeat 8.19.11, 9.2.5 Security Update (ESA-2026-10)

Improper Validation of Array Index in Packetbeat Leading to Denial of Service Improper Validation of Array Index CWE-129 in the PostgreSQL protocol parser in Packetbeat can lead Denial of Service via Input Data Manipulation CAPEC-153. An attacker can send a specially crafted packet causing a Go...

Kibana 8.19.10, 9.1.10, 9.2.4 Security Update (ESA-2026-05)

External Control of File Name or Path and Server-Side Request Forgery SSRF in Kibana Google Gemini Connector ESA-2026-05 External Control of File Name or Path CWE-73 combined with Server-Side Request Forgery CWE-918 can allow an attacker to cause arbitrary file disclosure through a specially...

Kibana 8.19.9, 9.1.9, and 9.2.3 Security Update (ESA-2025-35)

Kibana Improper Neutralization of Input During Web Page Generation 'Cross-site Scripting' ESA-2025-35 Improper neutralization of input during web page generation 'Cross-site Scripting' CWE-79 allows an unauthenticated user to embed a malicious script in content that will be served to web browsers...

Packetbeat 8.19.9, 9.1.9, and 9.2.3 Security Update (ESA-2025-30)

Packetbeat Improper Bounds Check ESA-2025-30 Improper Bounds Check CWE-787 in Packetbeat can allow a remote unauthenticated attacker to exploit a Buffer Overflow CAPEC-100 and reliably crash the application or cause significant resource exhaustion via a single crafted UDP packet with an invalid...

Kibana 8.15.0 Security Update (ESA-2024-29, ESA-2024-30)

Kibana server-side request forgery ESA-2024-29 A server side request forgery vulnerability was identified in Kibana where the /api/fleet/healthcheck API could be used to send requests to internal endpoints. Due to the nature of the underlying request, only endpoints available over https that retu...

Kibana 8.15.1 Security Update (ESA-2024-27, ESA-2024-28)

Kibana arbitrary code execution via YAML deserialization in Amazon Bedrock Connector ESA-2024-27 A deserialization issue in Kibana can lead to arbitrary code execution when Kibana attempts to parse a YAML document containing a crafted payload. This issue only affects users that use Elastic...

Kibana 8.14.0/7.17.22 Security Update (ESA-2024-11)

Kibana uncontrolled resource consumption ESA-2024-11 A high-privileged user, allowed to create custom osquery packs could affect the availability of Kibana by uploading a maliciously crafted osquery pack. Affected Versions: Kibana versions after 7.13.0 and before 7.17.22 and versions after 8.0.0...

Endpoint v8.10.4 Security Update

Elastic Endpoint Insertion of Sensitive Information into Log File ESA-2023-21 If Elastic Endpoint v7.9.0 - v8.10.3 is configured to use a non-default option in which the logging level is explicitly set to debug, and when Elastic Agent is simultaneously configured to collect and send those logs to...

Elastic Stack 6.8.4 security update

Elasticsearch username disclosure flaw ESA-2019-13 A username disclosure flaw was found in Elasticsearch’s API Key service. An unauthenticated attacker could send a specially crafted request and determine if a username exists in the Elasticsearch native realm. Affected Versions The following...

Kibana 8.19.12, 9.2.6, 9.3.1 Security Update (ESA-2026-19)

Missing Authorization in Kibana Leading to Unauthorized Endpoint Response Action Configuration Missing Authorization CWE-862 in Kibana’s server-side Detection Rule Management can lead to Unauthorized Endpoint Response Action Configuration host isolation, process termination, and process suspensio...

Kibana 8.19.10, 9.1.10, 9.2.4 Security Update (ESA-2026-03)

Allocation of Resources Without Limits or Throttling in Kibana Leading to Excessive Allocation ESA-2026-03 Allocation of Resources Without Limits or Throttling CWE-770 in Kibana Fleet can lead to Excessive Allocation CAPEC-130 via a specially crafted request. This causes the application to perfor...

Packetbeat 8.19.9, 9.1.9, and 9.2.3 Security Update (ESA-2025-31)

Packetbeat Out-of-bounds Read ESA-2025-31 Out-of-bounds read CWE-125 allows an unauthenticated remote attacker to perform a buffer overflow CAPEC-100 via the NFS protocol dissector, leading to a denial-of-service DoS through a reliable process crash when handling truncated XDR-encoded RPC message...

Elastic Cloud Enterprise (ECE) 3.8.2 and 4.0.2 Security Update (ESA-2025-21)

Elastic Cloud Enterprise ECE Improper Neutralization of Special Elements Used in a Template Engine ESA-2025-21 Improper neutralization of special elements used in a template engine in Elastic Cloud Enterprise ECE can lead to a malicious actor with Admin access exfiltrating sensitive information a...

Kibana 7.17.29, 8.17.8, 8.18.3, 9.0.3 Security Update (ESA-2025-10)

Kibana Open Redirect ESA-2025-10 URL redirection to an untrusted site 'Open Redirect' in Kibana can lead to sending a user to an arbitrary site and server-side request forgery via a specially crafted URL. Affected Versions: Kibana versions up to and including 7.17.28, 8.0.0 up to and including...

Logstash 8.17.6, 8.18.1, and 9.0.1 Security Update (ESA-2025-08)

Logstash Improper Certificate Validation in TCP output ESA-2025-08 Improper certificate validation in Logstash's TCP output could lead to a man-in-the-middle MitM attack in “client” mode, as hostname verification in TCP output was not being performed when the sslverificationmode = full was set...

APM Server 8.16.1 Security Update (ESA-2024-41)

APM Server Insertion of Sensitive Information into Log File ESA-2024-41 APM server logs could contain parts of the document body from a partially failed bulk index request. Depending on the nature of the document, this could disclose sensitive information in APM Server error logs. Affected...

Elastic Defend 8.17.3 Security Update (ESA-2025-05)

Elastic Defend Insertion of Sensitive Information into Log Files ESA-2025-05 Improper restriction of environment variables in Elastic Defend can lead to exposure of sensitive information such as API keys and tokens via automatic transmission of unfiltered environment variables to the stack. This...

Kibana 8.14.2 / 7.17.23 Security Update (ESA-2024-22)

Kibana arbitrary code execution via prototype pollution ESA-2024-22 A flaw allowing arbitrary code execution was discovered in Kibana. An attacker with access to ML and Alerting connector features, as well as write access to internal ML indices can trigger a prototype pollution vulnerability,...

APM Server 8.12.1 Security Update (ESA-2024-03)

APM Server Insertion of Sensitive Information into Log File ESA-2024-03 An issue was discovered whereby APM Server could log at ERROR level, a response from Elasticsearch indicating that indexing the document failed and that response would contain parts of the original document. Depending on the...

Beats, Elastic Agent, APM Server, and Fleet Server 8.10.1 Security Update - Improper Certificate Validation issue (ESA-2023-16)

Beats, Elastic Agent, APM Server, and Fleet Server Improper Certificate Validation issue ESA-2023-16 It was discovered that when acting as TLS clients, Beats, Elastic Agent, APM Server, and Fleet Server did not verify whether the server certificate is valid for the target IP address; however,...