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4 vulnerabilities found for OpenSearch Dashboards by OpenSearch
CVE-2026-18420 (GCVE-0-2026-18420)
Vulnerability from nvd – Published: 2026-08-20 20:40 – Updated: 2026-08-25 19:19
VLAI
EPSS
VEX
Title
RCE via Prototype Pollution in OpenSearch Dashboards
Summary
Improper input validation in the Time Series Visual Builder (TSVB) plugin in OpenSearch Dashboards allows an authenticated remote user to execute arbitrary code on the server via a crafted JSON payload to the metrics visualization API endpoint. This issue is a form of prototype pollution that enables remote code execution.
To remediate this issue, users should upgrade to OpenSearch Dashboards 3.8 or later.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 19:18 UTC
CWE
- CWE-1321 - Improperly controlled modification of object prototype attributes ('prototype pollution')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/opensearch-project/OpenSearch-… | patch |
| https://github.com/opensearch-project/OpenSearch-… | third-party-advisory |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | Amazon OpenSearch Service |
Affected:
3.0.0 , < 3.8.0
(custom)
cpe:2.3:a:aws:amazon_opensearch_service:*:*:*:*:*:*:*:* |
|
| OpenSearch | OpenSearch Dashboards |
Affected:
3.0.0 , < 3.8.0
(custom)
cpe:2.3:a:opensearch:opensearch_dashboards:*:*:*:*:*:*:*:* |
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CVE-2026-75897 (GCVE-0-2026-75897)
Vulnerability from nvd – Published: 2026-08-18 17:05 – Updated: 2026-08-18 19:21
VLAI
EPSS
VEX
Title
Uncontrolled Resource Consumption in Capabilities Route in OpenSearch Dashboards
Summary
Improper input validation in the capabilities route handler in OpenSearch Dashboards - the size of the request payload is not bounded - might allow remote attackers to cause a denial of service via a crafted HTTP request.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 19:10 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://opensearch.org/downloads/ | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSearch | OpenSearch Dashboards |
Affected:
1.3 , ≤ 3.7.0
(custom)
cpe:2.3:a:opensearch:opensearch_dashboards:*:*:*:*:*:*:*:* |
|
| AWS | Amazon OpenSearch Service |
Affected:
1.3 , ≤ 3.5
(custom)
cpe:2.3:a:aws:amazon_opensearch_service:*:*:*:*:*:*:*:* |
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CVE-2026-18420 (GCVE-0-2026-18420)
Vulnerability from cvelistv5 – Published: 2026-08-20 20:40 – Updated: 2026-08-25 19:19
VLAI
EPSS
VEX
Title
RCE via Prototype Pollution in OpenSearch Dashboards
Summary
Improper input validation in the Time Series Visual Builder (TSVB) plugin in OpenSearch Dashboards allows an authenticated remote user to execute arbitrary code on the server via a crafted JSON payload to the metrics visualization API endpoint. This issue is a form of prototype pollution that enables remote code execution.
To remediate this issue, users should upgrade to OpenSearch Dashboards 3.8 or later.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 19:18 UTC
CWE
- CWE-1321 - Improperly controlled modification of object prototype attributes ('prototype pollution')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/opensearch-project/OpenSearch-… | patch |
| https://github.com/opensearch-project/OpenSearch-… | third-party-advisory |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | Amazon OpenSearch Service |
Affected:
3.0.0 , < 3.8.0
(custom)
cpe:2.3:a:aws:amazon_opensearch_service:*:*:*:*:*:*:*:* |
|
| OpenSearch | OpenSearch Dashboards |
Affected:
3.0.0 , < 3.8.0
(custom)
cpe:2.3:a:opensearch:opensearch_dashboards:*:*:*:*:*:*:*:* |
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CVE-2026-75897 (GCVE-0-2026-75897)
Vulnerability from cvelistv5 – Published: 2026-08-18 17:05 – Updated: 2026-08-18 19:21
VLAI
EPSS
VEX
Title
Uncontrolled Resource Consumption in Capabilities Route in OpenSearch Dashboards
Summary
Improper input validation in the capabilities route handler in OpenSearch Dashboards - the size of the request payload is not bounded - might allow remote attackers to cause a denial of service via a crafted HTTP request.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 19:10 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://opensearch.org/downloads/ | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSearch | OpenSearch Dashboards |
Affected:
1.3 , ≤ 3.7.0
(custom)
cpe:2.3:a:opensearch:opensearch_dashboards:*:*:*:*:*:*:*:* |
|
| AWS | Amazon OpenSearch Service |
Affected:
1.3 , ≤ 3.5
(custom)
cpe:2.3:a:aws:amazon_opensearch_service:*:*:*:*:*:*:*:* |
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