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Product · Apache Software Foundation

Apache Log4cxx

4 known vulnerabilities.

Apache Log4cxx at a glance

Last 12 months
1
Critical · all time
0
Exploited · all time
0
Public exploit · all time
0
New vulnerabilities per month · last 12 months
0 1 1 December 2025: 0 vulnerabilities Dec 2025 January 2026: 0 vulnerabilities February 2026: 0 vulnerabilities March 2026: 0 vulnerabilities Mar April 2026: 1 vulnerability May 2026: 0 vulnerabilities June 2026: 0 vulnerabilities Jun July 2026: 0 vulnerabilities August 2026: 0 vulnerabilities September 2026: 0 vulnerabilities Sep October 2026: 0 vulnerabilities November 2026: 0 vulnerabilities
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All Critical High Medium Low Exploited only Public exploit

4 results · Feed

  • Medium 6.3
    CVE-2026-40023

    Apache Log4cxx, Apache Log4cxx (Conan), Apache Log4cxx (Brew): Silent log event loss in XMLLayout due to unescaped XML 1.0 forbidden characters

    Apache Log4cxx's XMLLayout https://logging.apache.org/log4cxx/1.7.0/classlog4cxx_1_1xml_1_1XMLLayout.html , in versions before 1.7.0, fails to sanitize characters forbidden by the XML 1.0 specification https://www.w3.org/TR/xml/#charsets in log messages, NDC,…

    Apache Software Foundation Apache Log4cxx Apache Log4cxx (Conan) Apache Log4cxx (Brew) Debian Ubuntu
  • Low 2.1
    CVE-2025-54812

    Apache Log4cxx: Improper HTML escaping in HTMLLayout

    Improper Output Neutralization for Logs vulnerability in Apache Log4cxx. When using HTMLLayout, logger names are not properly escaped when writing out to the HTML file. If untrusted data is used to retrieve the name of a logger, an attacker could theoreticall…

    Apache Software Foundation Apache Log4cxx log4cxx log4cxx Debian Ubuntu
  • Medium 6.3
    CVE-2025-54813

    Apache Log4cxx: Improper escaping with JSONLayout

    Improper Output Neutralization for Logs vulnerability in Apache Log4cxx. When using JSONLayout, not all payload bytes are properly escaped. If an attacker-supplied message contains certain non-printable characters, these will be passed along in the message an…

    Apache Software Foundation Apache Log4cxx log4cxx log4cxx Debian Ubuntu
  • High 8.8
    CVE-2023-31038

    Apache Log4cxx: SQL injection when using ODBC appender

    SQL injection in Log4cxx when using the ODBC appender to send log messages to a database.  No fields sent to the database were properly escaped for SQL injection.  This has been the case since at least version 0.9.0(released 2003-08-06) Note that Log4cxx is a…

    Apache Software Foundation Apache Log4cxx log4cxx log4cxx Debian Ubuntu