Man-in-the-Middle (MitM) Affecting log4j:log4j package, versions [0,]

  • Attack Complexity


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  • snyk-id


  • published

    28 Apr 2020

  • disclosed

    27 Apr 2020

  • credit


How to fix?

There is no fixed version for log4j:log4j.


log4j:log4j is a 1.x branch of the Apache Log4j project.

Affected versions of this package are vulnerable to Man-in-the-Middle (MitM). Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender.