CVE-2025-37730 – Logstash SSL Verification MitM Vulnerability

The following table lists the changes that have been made to the
CVE-2025-37730 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    May. 06, 2025

    Action Type Old Value New Value
    Added Description Improper certificate validation in Logstash’s TCP output could lead to a man-in-the-middle (MitM) attack in “client” mode, as hostname verification in TCP output was not being performed when the ssl_verification_mode => full was set.
    Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
    Added CWE CWE-295
    Added Reference https://discuss.elastic.co/t/logstash-8-17-6-8-18-1-and-9-0-1-security-update-esa-2025-08/377869
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