CVE-2026-105244

The Apache log4net logging framework (versions 1.2.12 before 3.5.0 ) contains an Improper Encoding or Escaping of Output vulnerability in the RemoteSyslogAppender component. Instead of escaping non-ASCII characters and control characters (like tabs), the appender silently deletes them. This allow...

CVE-2026-105244 Apache log4net: RemoteSyslogAppender silently deletes non-ASCII content

Improper Encoding or Escaping of Output vulnerability in the RemoteSyslogAppender of Apache log4net. Every character outside visible ASCII and space was removed from the record instead of being escaped, so non-ASCII text and control characters such as tabs disappeared without notice. A party whos...