Medium (6.5). EPSS 0.2% chance of exploitation in the next 30 days.
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.
Severity
CVSS 3.1
6.5 medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
EPSS
0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-31)