CVE-2025-37730

published 2025-05-06

CVE-2025-37730: 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…

Priority P4 33 medium 6.5 CVSS 3.1

AV N AC H PR N UI N S U C H I L A N

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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
elastic	logstash	>= 8.0.0 < 8.17.6	8.17.6
elastic	logstash	>= 8.18.0 < 8.18.1	8.18.1
elastic	logstash	>= 9.0.0 < 9.0.1	9.0.1

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CWE-295