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TI-2025-38639 Aliases CVE-2025-62371GHSA-43ff-rr26-8hx4

OpenSearch Data Prepper plugins trusts all SSL certificates by default

Priority LOW 32CWE-295Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Spoofing
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-295.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00195 9th percentileScored 2026-11-07
Fix Fixed data-prepper (opensearch-project): 2.12.2org.opensearch.dataprepper.plugins:opensearch (Maven): 2.12.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AWSdata-prepperbefore 2.12.22.12.2Patch availableCNA
—org.opensearch.dataprepper.plugins:opensearch (Maven)before 2.12.22.12.2Patch availableGHSA-43ff-rr26-8hx4
  • data-prepper VendorAWS Affected before 2.12.2 Fixed in 2.12.2 Patch available CNA
  • org.opensearch.dataprepper.plugins:opensearch (Maven) Vendor— Affected before 2.12.2 Fixed in 2.12.2 Patch available GHSA-43ff-rr26-8hx4

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:amazon:opensearch_data_prepper:*:*:*:*:*:*:*:*before 2.12.2VulnerableAWS
  • cpe:2.3:a:amazon:opensearch_data_prepper:*:*:*:*:*:*:*:* Versions before 2.12.2 Vulnerable ·AWS

Remediation

  • Fix · CNA data-prepper (opensearch-project) Fixed in 2.12.2
  • Fix · GHSA-43ff-rr26-8hx4 org.opensearch.dataprepper.plugins:opensearch (Maven) Fixed in 2.12.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-62371
  2. 2026-10-03 Alias added: GHSA-43ff-rr26-8hx4

References

Patch 3

Advisory 2

Other 1

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2024-36952 OpenTelemetry Logs source may lack authentication with some custom plugins CVSS 3.1MEDIUM 6.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences