It was reported [1],[2] that the CGI::Application perl module suffered from a flaw where, in certain cases, it would unexpectedly dump a complete set of web query data and server environment information as an error page. This could allow unintended disclosure of sensitive information.

A suggested fix is available [3] and the commit that caused the problem [4] was most likely introduced in version 4.19.

[1] https://rt.cpan.org/Public/Bug/Display.html?id=84403 [2] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=739505 [3] https://github.com/markstos/CGI--Application/pull/15 [4] https://github.com/markstos/CGI--Application/commit/61d327646f01fe