EUVD-2026-58252

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 can submit a single small crafted request to a product API endpoint that causes the node to...

CVE-2026-72678 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 can submit a single small crafted request to a product API endpoint that causes the node to...

CVE-2026-72687 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 confirming that it was legitimately issued by the cluster, and a size value carried inside the...

CVE-2026-72687

CVE-2026-72687 describes a memory allocation DoS in Elasticsearch where a low-privileged authenticated user can submit a forged opaque identifier, which is decoded and deserialized before cluster verification, causing an unbounded allocation and node termination. Affected versions span 8.0.0–8.19...

EUVD-2026-58251

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 confirming that it was legitimately issued by the cluster, and a size value carried inside the...

CVE-2026-72686 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 bound to the length of the value being validated, so the validation...

EUVD-2026-58250

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 bound to the length of the value being validated, so the validation...

CVE-2026-72686

The CVE-2026-72686 issue affects Elasticsearch and causes Denial of Service via uncontrolled recursion in a input-validation recursive routine, exhausting stack and terminating the node process. Affected versions: all 8.0.0–8.19.19 and 9.0.0–9.4.4, plus 9.5.0. Remediation: upgrade to 8.19.20, 9.4...

EUVD-2026-58249

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 thread from a bounded pool for a disproportionate amount of time, degrading the...

CVE-2026-72685 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 thread from a bounded pool for a disproportionate amount of time, degrading the...

CVE-2026-72685 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 thread from a bounded pool for a disproportionate amount of time, degrading the...

CVE-2026-72685

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 thread from a bounded pool for a disproportionate amount of time, degrading the...

CVE-2026-72685

CVE-2026-72685 describes an inefficient algorithmic complexity in Elasticsearch that allows a low-privileged authenticated user, who can index documents, to submit a small crafted document causing a worker thread to be consumed for an extended period, degrading indexing availability. Affected ver...

CVE-2026-72684

This CVE affects Elasticsearch where an authenticated user with read privileges can trigger memory allocation by sending a crafted small search input, leading to an out-of-memory fatal condition and node denial of service. Affected versions: 8.0.0–8.19.19 and 9.0.0–9.4.4. Mitigation: upgrade to v...

CVE-2026-72684 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 internal component to allocate memory without any upper bound, and the allocation occurs outside the...

CVE-2026-72684

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 internal component to allocate memory without any upper bound, and the allocation occurs outside the...

EUVD-2026-58248

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 internal component to allocate memory without any upper bound, and the allocation occurs outside the...

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...

CVE-2026-72683

The CVE-2026-72683 issue affects Elasticsearch where an authenticated user able to call the simulate pipeline API can submit a request that creates a self-referential data structure. When processed by an internal component, the operation recurses without bound, causing a fatal error that terminat...

CVE-2026-72683

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...