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174 vulnerabilities found for elasticsearch by Elastic
CVE-2026-72687 (GCVE-0-2026-72687)
Vulnerability from nvd – Published: 2026-08-13 19:11 – Updated: 2026-08-13 20:34
VLAI
EPSS
VEX
Title
Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service
Summary
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 identifier drives an allocation that is neither capped nor accounted for by the available memory-usage controls. The resulting out-of-memory condition is fatal and terminates the affected node process, resulting in a denial of service.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:23 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) Affected: 9.5.0 (semver) |
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CVE-2026-72686 (GCVE-0-2026-72686)
Vulnerability from nvd – Published: 2026-08-13 19:10 – Updated: 2026-08-13 20:34
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
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 causes the thread to exhaust its stack. The resulting fatal error is not handled by the surrounding execution paths and terminates the affected node process, producing a denial of service.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:23 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) Affected: 9.5.0 (semver) |
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CVE-2026-72685 (GCVE-0-2026-72685)
Vulnerability from nvd – Published: 2026-08-13 19:10 – Updated: 2026-08-13 20:34
VLAI
EPSS
VEX
Title
Inefficient Algorithmic Complexity in Elasticsearch Leading to Denial of Service
Summary
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 availability of indexing operations on the affected node.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:23 UTC
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) |
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CVE-2026-72684 (GCVE-0-2026-72684)
Vulnerability from nvd – Published: 2026-08-13 19:10 – Updated: 2026-08-13 20:35
VLAI
EPSS
VEX
Title
Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service
Summary
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 scope of the existing memory accounting controls that were intended to constrain it. The resulting out-of-memory condition is fatal and terminates the affected node process, causing a denial of service.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:22 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) |
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CVE-2026-72683 (GCVE-0-2026-72683)
Vulnerability from nvd – Published: 2026-08-13 19:10 – Updated: 2026-08-13 20:35
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
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. When a specific internal component later processes that structure, the operation recurses without bound and raises a fatal error that is not handled by the surrounding execution path, terminating the affected node process and resulting in a denial of service.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:22 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
5.0.0 , ≤ 8.19.18
(semver)
Affected: 9.3.0 , ≤ 9.3.7 (semver) Affected: 9.4.0 , ≤ 9.4.3 (semver) |
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CVE-2026-72679 (GCVE-0-2026-72679)
Vulnerability from nvd – Published: 2026-08-13 19:11 – Updated: 2026-08-13 20:34
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
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 raises a fatal error, terminating the Elasticsearch node process and causing a denial of service for that node. An authenticated user holding only read-only privileges on a single searchable index can trigger the condition with one small search request.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:23 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
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|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.19.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) |
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CVE-2026-72678 (GCVE-0-2026-72678)
Vulnerability from nvd – Published: 2026-08-13 19:11 – Updated: 2026-08-13 20:34
VLAI
EPSS
VEX
Title
Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service
Summary
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 attempt an excessively large allocation. The resulting memory exhaustion raises a fatal error that terminates the Elasticsearch node process, causing a denial of service for the affected node and degrading cluster health. The defect is not volumetric, so a single request is sufficient regardless of the heap size configured on the target node.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:23 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
Impacted products
1 product
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|---|---|---|---|
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Affected:
8.19.0 , ≤ 8.19.19
(semver)
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CVE-2026-72656 (GCVE-0-2026-72656)
Vulnerability from nvd – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:29
VLAI
EPSS
VEX
Title
Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service
Summary
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 queries could send a specially crafted query whose evaluation allocates an unbounded amount of heap memory, exhausting the available heap on the receiving node and causing the node to become unavailable.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:57 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.11.0 , ≤ 8.17.9
(semver)
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CVE-2026-72647 (GCVE-0-2026-72647)
Vulnerability from nvd – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:28
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
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 a depth limit, exhausting the thread stack and terminating the affected node.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:50 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
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CVE-2026-72645 (GCVE-0-2026-72645)
Vulnerability from nvd – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:28
VLAI
EPSS
VEX
Title
Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service
Summary
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 submit one small, specially crafted search request that causes an excessively large memory allocation, exhausting the JVM heap and terminating the affected node.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:50 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) Affected: 9.5.0 (semver) |
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CVE-2026-72642 (GCVE-0-2026-72642)
Vulnerability from nvd – Published: 2026-08-13 19:13 – Updated: 2026-08-14 03:56
VLAI
EPSS
VEX
Title
Use of Out-of-range Pointer Offset in the Elasticsearch Machine Learning Native Inference Process
Summary
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, without validating that the offset stays within the bounds of the underlying storage. A user with the privileges required to upload and deploy a trained model can craft a model that reads and writes memory outside the intended allocation. The result is heap corruption that crashes the inference process, and, with sufficient control over the heap layout, could allow arbitrary code execution in the context of that process.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 00:00 UTC
CWE
- CWE-823 - Use of Out-of-range Pointer Offset
Assigner
References
1 reference
Impacted products
1 product
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|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.19.0 , ≤ 8.19.19
(semver)
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CVE-2026-72639 (GCVE-0-2026-72639)
Vulnerability from nvd – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:28
VLAI
EPSS
VEX
Title
Memory Allocation with Excessive Size Value in Elasticsearch Highlighting Leading to Denial of Service
Summary
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 breaker. An authenticated user holding only read privileges on a single searchable index can submit one small search request that causes the node to reserve an excessively large internal data structure. The allocation occurs before the existing highlighting safety limits are evaluated, so memory exhaustion raises a fatal error that terminates the Elasticsearch node process. This results in a denial of service for the affected node and degrades cluster routing and health. The defect is not volumetric and does not depend on the size of the indexed data, so a single request is sufficient.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:49 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.19.0 , ≤ 8.19.19
(semver)
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CVE-2026-72638 (GCVE-0-2026-72638)
Vulnerability from nvd – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:28
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
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 containing a specially crafted, malformed custom analysis definition that is resolved recursively without a cycle or depth check, exhausting the thread stack and terminating the affected node.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:50 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) |
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CVE-2026-72636 (GCVE-0-2026-72636)
Vulnerability from nvd – Published: 2026-08-13 19:14 – Updated: 2026-08-13 20:26
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Wildcard Matching Leading to Denial of Service
Summary
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 against names is implemented recursively and had no bound on recursion depth or on the total number of match operations performed. A search request containing a wildcard pattern with a large number of wildcard groups, evaluated against a sufficiently long name, exhausts the thread stack. Elasticsearch treats a stack overflow as an unrecoverable condition and shuts the node down, so the request terminates the affected node rather than failing gracefully.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:29 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
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|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) |
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CVE-2026-63263 (GCVE-0-2026-63263)
Vulnerability from nvd – Published: 2026-07-21 23:10 – Updated: 2026-07-22 13:07
VLAI
EPSS
VEX
Title
Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
Summary
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 causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 13:04 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
9.4.0 , ≤ 9.4.3
(semver)
Affected: 9.0.0 , ≤ 9.3.7 (semver) Affected: 8.0.0 , ≤ 8.19.18 (semver) |
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CVE-2026-72636 (GCVE-0-2026-72636)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:14 – Updated: 2026-08-13 20:26
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Wildcard Matching Leading to Denial of Service
Summary
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 against names is implemented recursively and had no bound on recursion depth or on the total number of match operations performed. A search request containing a wildcard pattern with a large number of wildcard groups, evaluated against a sufficiently long name, exhausts the thread stack. Elasticsearch treats a stack overflow as an unrecoverable condition and shuts the node down, so the request terminates the affected node rather than failing gracefully.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:29 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
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|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
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(semver)
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CVE-2026-72642 (GCVE-0-2026-72642)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:13 – Updated: 2026-08-14 03:56
VLAI
EPSS
VEX
Title
Use of Out-of-range Pointer Offset in the Elasticsearch Machine Learning Native Inference Process
Summary
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, without validating that the offset stays within the bounds of the underlying storage. A user with the privileges required to upload and deploy a trained model can craft a model that reads and writes memory outside the intended allocation. The result is heap corruption that crashes the inference process, and, with sufficient control over the heap layout, could allow arbitrary code execution in the context of that process.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 00:00 UTC
CWE
- CWE-823 - Use of Out-of-range Pointer Offset
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.19.0 , ≤ 8.19.19
(semver)
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CVE-2026-72639 (GCVE-0-2026-72639)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:28
VLAI
EPSS
VEX
Title
Memory Allocation with Excessive Size Value in Elasticsearch Highlighting Leading to Denial of Service
Summary
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 breaker. An authenticated user holding only read privileges on a single searchable index can submit one small search request that causes the node to reserve an excessively large internal data structure. The allocation occurs before the existing highlighting safety limits are evaluated, so memory exhaustion raises a fatal error that terminates the Elasticsearch node process. This results in a denial of service for the affected node and degrades cluster routing and health. The defect is not volumetric and does not depend on the size of the indexed data, so a single request is sufficient.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:49 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.19.0 , ≤ 8.19.19
(semver)
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CVE-2026-72638 (GCVE-0-2026-72638)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:28
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
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 containing a specially crafted, malformed custom analysis definition that is resolved recursively without a cycle or depth check, exhausting the thread stack and terminating the affected node.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:50 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
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|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) |
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CVE-2026-72647 (GCVE-0-2026-72647)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:28
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
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 a depth limit, exhausting the thread stack and terminating the affected node.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:50 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
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|---|---|---|---|
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Affected:
8.0.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) |
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CVE-2026-72645 (GCVE-0-2026-72645)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:28
VLAI
EPSS
VEX
Title
Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service
Summary
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 submit one small, specially crafted search request that causes an excessively large memory allocation, exhausting the JVM heap and terminating the affected node.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:50 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
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CVE-2026-72656 (GCVE-0-2026-72656)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:29
VLAI
EPSS
VEX
Title
Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service
Summary
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 queries could send a specially crafted query whose evaluation allocates an unbounded amount of heap memory, exhausting the available heap on the receiving node and causing the node to become unavailable.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:57 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
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(semver)
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CVE-2026-72679 (GCVE-0-2026-72679)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:11 – Updated: 2026-08-13 20:34
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
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 raises a fatal error, terminating the Elasticsearch node process and causing a denial of service for that node. An authenticated user holding only read-only privileges on a single searchable index can trigger the condition with one small search request.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:23 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
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|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.19.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) |
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CVE-2026-72678 (GCVE-0-2026-72678)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:11 – Updated: 2026-08-13 20:34
VLAI
EPSS
VEX
Title
Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service
Summary
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 attempt an excessively large allocation. The resulting memory exhaustion raises a fatal error that terminates the Elasticsearch node process, causing a denial of service for the affected node and degrading cluster health. The defect is not volumetric, so a single request is sufficient regardless of the heap size configured on the target node.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:23 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
Impacted products
1 product
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|---|---|---|---|
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Affected:
8.19.0 , ≤ 8.19.19
(semver)
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CVE-2026-72687 (GCVE-0-2026-72687)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:11 – Updated: 2026-08-13 20:34
VLAI
EPSS
VEX
Title
Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service
Summary
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 identifier drives an allocation that is neither capped nor accounted for by the available memory-usage controls. The resulting out-of-memory condition is fatal and terminates the affected node process, resulting in a denial of service.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:23 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
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CVE-2026-72686 (GCVE-0-2026-72686)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:10 – Updated: 2026-08-13 20:34
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
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 causes the thread to exhaust its stack. The resulting fatal error is not handled by the surrounding execution paths and terminates the affected node process, producing a denial of service.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:23 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
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CVE-2026-72685 (GCVE-0-2026-72685)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:10 – Updated: 2026-08-13 20:34
VLAI
EPSS
VEX
Title
Inefficient Algorithmic Complexity in Elasticsearch Leading to Denial of Service
Summary
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 availability of indexing operations on the affected node.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:23 UTC
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) |
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CVE-2026-72684 (GCVE-0-2026-72684)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:10 – Updated: 2026-08-13 20:35
VLAI
EPSS
VEX
Title
Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service
Summary
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 scope of the existing memory accounting controls that were intended to constrain it. The resulting out-of-memory condition is fatal and terminates the affected node process, causing a denial of service.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:22 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) |
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CVE-2026-72683 (GCVE-0-2026-72683)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:10 – Updated: 2026-08-13 20:35
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Summary
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. When a specific internal component later processes that structure, the operation recurses without bound and raises a fatal error that is not handled by the surrounding execution path, terminating the affected node process and resulting in a denial of service.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 20:22 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
5.0.0 , ≤ 8.19.18
(semver)
Affected: 9.3.0 , ≤ 9.3.7 (semver) Affected: 9.4.0 , ≤ 9.4.3 (semver) |
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CERTFR-2026-AVI-0906
Vulnerability from certfr_avis - Published: 2026-07-22 - Updated: 2026-07-22
De multiples vulnérabilités ont été découvertes dans les produits Elastic. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à la confidentialité des données et une atteinte à l'intégrité des données.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Elastic | Elasticsearch | Elasticsearch versions 8.x antérieures à 8.19.19 | ||
| Elastic | Kibana | Kibana versions 9.x antérieures à 9.3.8 | ||
| Elastic | Elasticsearch | Elasticsearch versions 9.4.x antérieures à 9.4.4 | ||
| Elastic | Elasticsearch | Elasticsearch versions 9.x antérieures à 9.3.8 | ||
| Elastic | Kibana | Kibana versions 8.x antérieures à 8.19.19 | ||
| Elastic | Kibana | Kibana versions 9.4.x antérieures à 9.4.4 |
References
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Elasticsearch versions 8.x ant\u00e9rieures \u00e0 8.19.19",
"product": {
"name": "Elasticsearch",
"vendor": {
"name": "Elastic",
"scada": false
}
}
},
{
"description": "Kibana versions 9.x ant\u00e9rieures \u00e0 9.3.8",
"product": {
"name": "Kibana",
"vendor": {
"name": "Elastic",
"scada": false
}
}
},
{
"description": "Elasticsearch versions 9.4.x ant\u00e9rieures \u00e0 9.4.4",
"product": {
"name": "Elasticsearch",
"vendor": {
"name": "Elastic",
"scada": false
}
}
},
{
"description": "Elasticsearch versions 9.x ant\u00e9rieures \u00e0 9.3.8",
"product": {
"name": "Elasticsearch",
"vendor": {
"name": "Elastic",
"scada": false
}
}
},
{
"description": "Kibana versions 8.x ant\u00e9rieures \u00e0 8.19.19",
"product": {
"name": "Kibana",
"vendor": {
"name": "Elastic",
"scada": false
}
}
},
{
"description": "Kibana versions 9.4.x ant\u00e9rieures \u00e0 9.4.4",
"product": {
"name": "Kibana",
"vendor": {
"name": "Elastic",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-63136",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63136"
},
{
"name": "CVE-2026-63143",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63143"
},
{
"name": "CVE-2026-63263",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63263"
},
{
"name": "CVE-2026-56144",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-56144"
},
{
"name": "CVE-2026-63141",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63141"
},
{
"name": "CVE-2026-56146",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-56146"
},
{
"name": "CVE-2026-63259",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63259"
},
{
"name": "CVE-2026-63260",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63260"
},
{
"name": "CVE-2026-63142",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63142"
},
{
"name": "CVE-2026-56147",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-56147"
},
{
"name": "CVE-2026-63145",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63145"
},
{
"name": "CVE-2018-17245",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-17245"
},
{
"name": "CVE-2026-63139",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63139"
},
{
"name": "CVE-2026-63144",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63144"
},
{
"name": "CVE-2026-63262",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63262"
},
{
"name": "CVE-2026-42397",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-42397"
},
{
"name": "CVE-2026-63140",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63140"
},
{
"name": "CVE-2026-63261",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63261"
},
{
"name": "CVE-2026-56145",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-56145"
},
{
"name": "CVE-2026-49092",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-49092"
}
],
"initial_release_date": "2026-07-22T00:00:00",
"last_revision_date": "2026-07-22T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0906",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-07-22T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
},
{
"description": "Falsification de requ\u00eates c\u00f4t\u00e9 serveur (SSRF)"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits Elastic. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance, une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es et une atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Elastic",
"vendor_advisories": [
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388571",
"url": "https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-68/388571"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388565",
"url": "https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-64/388565"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388573",
"url": "https://discuss.elastic.co/t/kibana-9-4-4-security-update-esa-2026-70/388573"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388568",
"url": "https://discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-security-update-esa-2026-66/388568"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388577",
"url": "https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-74/388577"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388572",
"url": "https://discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-security-update-esa-2026-69/388572"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388566",
"url": "https://discuss.elastic.co/t/kibana-9-3-8-9-4-4-security-update-esa-2026-65/388566"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388553",
"url": "https://discuss.elastic.co/t/kibana-9-4-3-security-update-esa-2026-54/388553"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388555",
"url": "https://discuss.elastic.co/t/elasticsearch-8-19-18-9-3-7-9-4-4-security-update-esa-2026-56/388555"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388569",
"url": "https://discuss.elastic.co/t/kibana-9-3-8-9-4-4-security-update-esa-2026-67/388569"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388554",
"url": "https://discuss.elastic.co/t/kibana-9-3-7-9-4-4-security-update-esa-2026-55/388554"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388556",
"url": "https://discuss.elastic.co/t/elasticsearch-8-19-18-9-3-7-9-4-4-security-update-esa-2026-57/388556"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388558",
"url": "https://discuss.elastic.co/t/kibana-8-19-18-9-3-7-9-4-3-security-update-esa-2026-59/388558"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388574",
"url": "https://discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-security-update-esa-2026-71/388574"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388557",
"url": "https://discuss.elastic.co/t/kibana-9-4-3-security-update-esa-2026-58/388557"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388575",
"url": "https://discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-security-update-esa-2026-72/388575"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388559",
"url": "https://discuss.elastic.co/t/elasticsearch-8-19-15-9-2-9-9-3-4-security-update-esa-2026-60/388559"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388576",
"url": "https://discuss.elastic.co/t/kibana-9-4-4-security-update-esa-2026-73/388576"
},
{
"published_at": "2026-07-21",
"title": "Bulletin de s\u00e9curit\u00e9 Elastic 388560",
"url": "https://discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-security-update-esa-2026-63/388560"
}
]
}