CVE-2025-62371 OpenSearch Data Prepper plugins trusts all SSL certificates by default
OpenSearch Data Prepper plugins bypass SSL validation by default, allowing man-in-the-middle attacks to intercept or modify data in transit.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-62371?
CVE-2025-62371 is a high-severity vulnerability in opensearch-project data-prepper, published on 15 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-295
Which versions are affected by CVE-2025-62371?
2 open source packages ship an affected version, including org.opensearch.dataprepper.plugins:opensearch. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.opensearch.dataprepper.plugins:opensearch Maven | All versions | 2.12.2 |
org.opensearch.dataprepper.plugins:opensearch Maven | All versions | 2.12.2 |
Products include Amazon Opensearch Data Prepper.
How do I fix CVE-2025-62371?
Upgrade org.opensearch.dataprepper.plugins:opensearch to 2.12.2 or later.
Is CVE-2025-62371 being exploited?
There is no known exploitation of CVE-2025-62371 in the wild and no public exploit code.
Other vulnerabilities in opensearch-project data-prepper
Sources
Also known as GHSA-43ff-rr26-8hx4.