Improper Certificate Validation Affecting logstash-9.1-compat package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.24% (48th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-LOGSTASH91COMPAT-14807022
  • published1 Jan 2026
  • disclosed18 Dec 2025

Introduced: 18 Dec 2025

CVE-2025-68161  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

There is no fixed version for Minimos:latest logstash-9.1-compat.

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.

The Socket Appender in Apache Log4j Core versions 2.0-beta9 through 2.25.2 does not perform TLS hostname verification of the peer certificate, even when the verifyHostName https://logging.apache.org/log4j/2.x/manual/appenders/network.html#SslConfiguration-attr-verifyHostName configuration attribute or the log4j2.sslVerifyHostName https://logging.apache.org/log4j/2.x/manual/systemproperties.html#log4j2.sslVerifyHostName system property is set to true.

This issue may allow a man-in-the-middle attacker to intercept or redirect log traffic under the following conditions:

  • The attacker is able to intercept or redirect network traffic between the client and the log receiver.
  • The attacker can present a server certificate issued by a certification authority trusted by the Socket Appender’s configured trust store (or by the default Java trust store if no custom trust store is configured).

Users are advised to upgrade to Apache Log4j Core version 2.25.3, which addresses this issue.

As an alternative mitigation, the Socket Appender may be configured to use a private or restricted trust root to limit the set of trusted certificates.

CVSS Base Scores

version 3.1