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org.apache.logging.log4j:log4j-core@3.0.0-alpha1

  • latest version

    2.25.4

  • latest non vulnerable version

    2.25.4

  • first published

    13 years ago

  • latest version published

    25 days ago

  • licenses detected

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    Direct Vulnerabilities

    Known vulnerabilities in the org.apache.logging.log4j:log4j-core package. This does not include vulnerabilities belonging to this package’s dependencies.

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    VulnerabilityVulnerable Version
    • M
    Improper Encoding or Escaping of Output

    org.apache.logging.log4j:log4j-core is a logging library for Java.

    Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output in the Log4j1XmlLayout plugin. An attacker can cause log events to be silently lost or downstream log processing systems to drop or fail to index affected records by introducing XML 1.0 forbidden characters into log messages, resulting in malformed XML output that conforming XML parsers reject with a fatal error.

    How to fix Improper Encoding or Escaping of Output?

    A fix was pushed into the master branch but not yet published.

    [2.7,2.25.4)[3.0.0-alpha1,)
    • M
    Improper Encoding or Escaping of Output

    org.apache.logging.log4j:log4j-core is a logging library for Java.

    Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output in the XmlLayout plugin. An attacker can cause log events to be silently lost or malformed by injecting XML 1.0 forbidden characters into log messages or MDC values. This may result in malformed XML output, which can cause downstream log-processing systems to drop affected records or prevent log events from being delivered to their intended destinations.

    How to fix Improper Encoding or Escaping of Output?

    A fix was pushed into the master branch but not yet published.

    [2.0-alpha1,2.25.4)[3.0.0-alpha1,)
    • M
    Improper Validation of Certificate with Host Mismatch

    org.apache.logging.log4j:log4j-core is a logging library for Java.

    Affected versions of this package are vulnerable to Improper Validation of Certificate with Host Mismatch due to the lack of TLS hostname verification in the SocketAppender component when configured through the verifyHostName attribute of the <Ssl> element. An attacker can intercept and manipulate network traffic by presenting a certificate issued by a trusted certificate authority to the appender's configured trust store, or the default Java trust store if none is configured. This is only exploitable if an SMTP, Socket, or Syslog appender is in use and TLS is configured via a nested element.

    Note:

    This issue is due to incomplete fix for CVE-2025-68161.

    How to fix Improper Validation of Certificate with Host Mismatch?

    A fix was pushed into the master branch but not yet published.

    [2.12.0,2.25.4)[3.0.0-alpha1,)
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