High severity · published Aug 18, 2026
CVE-2026-75897
Uncontrolled Resource Consumption in Capabilities Route in OpenSearch Dashboards
7.5
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AO
Amazon OpenSearch Service · AWS
1.3 through 3.5 · source: vendor
OD
OpenSearch Dashboards · OpenSearch
1.3 through 3.7.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-75897
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-75897
aws.amazon.com
https://aws.amazon.com/security/security-bulletins/2026-082-aws/
opensearch.org
https://opensearch.org/downloads/
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RCE via Prototype Pollution in OpenSearch Dashboards