App::Ack vulnerabilities

A vulnerability in App::Ack through version 3.10.0 for Perl causes unsanitized terminal escape sequences from filenames to be printed in several output modes. When ack prints a filename containing terminal control bytes like ANSI escape sequences, those bytes reach the terminal unchanged. Version 3.10.0 added a _safe_filename helper that sanitizes filenames in -f, -g, colored match heading, and per-match lines, but the --show-types, -l/-L, and -c paths still emit the raw filename.

A vulnerability in App::Ack for Perl before version 3.10.0 allows memory exhaustion via an unbounded context value in a project .ackrc. Ack searches the directory hierarchy for .ackrc and loads its options, where -B and -C accept any positive integer, potentially allocating a huge buffer.

A vulnerability in App::Ack for Perl (up to version 3.10.0) allows reading arbitrary files via the --files-from option in a project .ackrc file. Ack searches the directory hierarchy for .ackrc and loads its options, but the option blocklist does not include --files-from, enabling a malicious repository to read files outside the project.