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CVE-2026-75897 - Uncontrolled resource consumption in OpenSearch Dashboards capabilities route

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Security notice

Cybersecurity Classified by Officially

CVE-2026-75897 - Uncontrolled resource consumption in OpenSearch Dashboards capabilities route

Bulletin ID: 2026-082-AWS
Scope: AWS
Content Type: Important (requires attention)
Publication Date: 08/18/2026 10:00 AM PDT

OpenSearch Dashboards is the open-source visualization and management UI for OpenSearch, and ships as part of Amazon OpenSearch Service. We identified CVE-2026-75897, an improper input validation in the capabilities route handler in OpenSearch Dashboards. The handler does not bound the size of the request payload, which might allow remote attackers to cause a denial of service via a crafted HTTP request.

OpenSearch "Plugin Type" Plugin (open-source, self-managed):

  • Affected: All versions from 1.3.0 through 3.7.0 inclusive, including all 2.x releases up to and including 2.19.6. The issue is inherited from upstream Kibana and is also present in Kibana 7.7.1 through 7.10.2.

    • Amazon OpenSearch Service (AWS Managed):

  • Affected: Engine versions OpenSearch 1.3, 2.11, 2.13, 2.15, 2.17, 2.19, 3.1, 3.3, and 3.5, and Elasticsearch-compatibility versions using Kibana 7.9 and 7.10.
  • Fixed: A patched service software release is available for all affected versions. Apply the latest available service software update to your domain.
  • OpenSearch Dashboards (open-source, self-managed):
    Upgrade to OpenSearch Dashboards 3.8.0 or later.

  • Amazon OpenSearch Service (AWS Managed):
    Apply the latest available service software update to your domain. The OpenSearch Service console Notifications panel indicates when an update is available for your domain. For instructions, see Service software updates in Amazon OpenSearch Service.

  • Amazon OpenSearch Serverless:
    No action required.

    • We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.

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    Provenance

    Organization
    Amazon Web Services — imported from official source
    Official source
    https://aws.amazon.com/security/security-bulletins/feed/ RSS
    Imported
    September 15, 2026 20:57
    Versions
    2 recorded
    Identity
    bcf4322fd98f4405c31438708aef17d8f1e5d1d5

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