CVE-2026-75897

High

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.

SeverityHigh

CVSS7.5

Exploit probability—

ProductOpenSearch Dashboards

PublishedAug 18, 2026

First seenAug 18, 2026

Weakness typeCWE-1284CWE-1284

How to fix

Patches

opensearch.org/downloads/

Vendor advisories

aws.amazon.com/security/security-bulletins/2026-082-aws/

Affected products

Product	Affected versions	Fixed in
OpenSearch OpenSearch Dashboards	1.3 ≤ v ≤ 3.7.0	—
AWS Amazon OpenSearch Service	1.3 ≤ v ≤ 3.5	—

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