CVE-2025-61730 Affecting logstash-9.1-compat package, versions <9.1.9-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-LOGSTASH91COMPAT-15165950
  • published1 Feb 2026
  • disclosed28 Jan 2026

Introduced: 28 Jan 2026

NewCVE-2025-61730  (opens in a new tab)

How to fix?

Upgrade Minimos:latest logstash-9.1-compat to version 9.1.9-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream logstash-9.1-compat package and not the logstash-9.1-compat package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

During the TLS 1.3 handshake if multiple messages are sent in records that span encryption level boundaries (for instance the Client Hello and Encrypted Extensions messages), the subsequent messages may be processed before the encryption level changes. This can cause some minor information disclosure if a network-local attacker can inject messages during the handshake.

CVSS Base Scores

version 3.1