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Vulnerability record · CVE-2025-62371 · published 15 October 2025

CVE-2025-62371: Amazon opensearch data prepper improper certificate validation vulnerability

Amazon · Opensearch Data Prepper

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.

7.4 CVSS 3.1 High EPSS 0.19% · top 91.7% CWE-295 · Improper certificate validation
7.4CVSS 3.1 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/opensearch-project/data-prepper/commit/98fcf0d0ff9c18f1f7501e11dbed918814724b99 Patch
https://github.com/opensearch-project/data-prepper/commit/b0386a5af3fb71094ba6c86cd8b2afc783246599 Patch
https://github.com/opensearch-project/data-prepper/commit/db11ce8f27ebca018980b2bca863f7173de9ce56 Patch
https://github.com/opensearch-project/data-prepper/security/advisories/GHSA-43ff-rr26-8hx4 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2025-62371), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.