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Rex-1.16.1
⭐ Starred 717 / Rex::Template::NG
Security Advisories (1)
CVE-2026-94140 (2026-10-21)

Rex versions through 1.16.1 for Perl accept an unknown SSH host key for remote rsync transfers because sync hardcodes StrictHostKeyChecking=no. Every remote branch of sync builds its ssh command with that option, for password authentication, for private-key authentication and for the fallback. The ssh options a caller sets through set_openssh_opt reach the OpenSSH transport but not this command, so there is no configuration that restores host key checking for the transfer. An attacker who can redirect the connection before the real host key is known presents their own and the transfer proceeds: under password authentication sync sends the connection password to that server, an upload writes the selected local files to it, and a download writes what it returns to the local destination.

NAME

Rex::Template::NG - simple template engine (replacing Rex::Template)

SYNOPSIS

use Rex::Template::NG;

my $template = Rex::Template->new;

print $template->parse($content, \%template_vars);
print $template->parse($content, @template_vars);

DESCRIPTION

This is intended as a replacement of the original Rex::Template, therefore its interface and syntax are identical. The main differences are:

  • produces "more correct" output in case when comping is required

  • gives better diagnostics in case of errors

It is recommended to use this module instead of Rex::Template.

DIAGNOSTICS

It prints the whole template as INFO level messages, and then a message about the problem with its context and line number (e.g. "Unknown variable name $var on code line: ... line: ...").

CONFIGURATION AND ENVIRONMENT

DEPENDENCIES

INCOMPATIBILITIES

BUGS AND LIMITATIONS