opensearch-project vulnerabilities and threats

OpenSearch Dashboards versions 2.14.0 to before 2.19.6 and 3.0.0 to before 3.7.0 contain a Server-Side Request Forgery (SSRF) vulnerability in the fetchDataSourceMetaData route. This flaw allows an authenticated user to supply internal or loopback endpoints to probe internal network resources because this route does not validate URLs against configured deny or allow lists. The vulnerability has been fixed in versions 2.19.6 and 3.7.0.

CVE-2026-63393 is a high-severity vulnerability in OpenSearch SQL affecting versions 2.8.0.0 through 2.19.5.0 and 3.0.0.0-alpha1 through 3.6.9.0. It allows a remote authenticated user with basic read/search permissions to exploit unsafe deserialization of untrusted data via the `cursor` parameter on the `plugins/sql` endpoint, leading to arbitrary code execution on the server. The issue is fixed in versions 2.19.6.0 and 3.7.0.0.

OpenSearch Data Prepper as an open source data collector for observability data. In versions prior to 2.12.2, the OpenSearch sink and source plugins in Data Prepper trust all SSL certificates by default when no certificate path is provided. Prior to this fix, the OpenSearch sink and source plugins would automatically use a trust all SSL strategy when connecting to OpenSearch clusters if no certificate path was explicitly configured. This behavior bypasses SSL certificate validation, potentially allowing attackers to intercept and modify data in transit through man-in-the-middle attacks. The vulnerability affects connections to OpenSearch when the cert parameter is not explicitly provided. This issue has been patched in version 2.12.2. As a workaround, users can add the cert parameter to their OpenSearch sink or source configuration with the path to the cluster's CA certificate.