/ 
perl-5.40.2
⭐ Starred 2013 / Test2::Plugin::UTF8
Security Advisories (3)
CVE-2026-8376 (2026-05-25)

Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds. Perl_study_chunk in regcomp_study.c checked the size of the joined substring buffer in characters rather than bytes. For a quantified fixed substring with a large minimum count, the byte length mincount * l could overflow SSize_t, producing an undersized SvGROW allocation; the subsequent copy writes past the end of the buffer. A caller that compiles an attacker-controlled regular expression on a 32-bit perl build triggers a heap buffer overflow at compile time.

CVE-2025-40909 (2025-05-30)

Perl threads have a working directory race condition where file operations may target unintended paths. If a directory handle is open at thread creation, the process-wide current working directory is temporarily changed in order to clone that handle for the new thread, which is visible from any third (or more) thread already running. This may lead to unintended operations such as loading code or accessing files from unexpected locations, which a local attacker may be able to exploit. The bug was introduced in commit 11a11ecf4bea72b17d250cfb43c897be1341861e and released in Perl version 5.13.6

CVE-2026-4176 (2026-03-29)

Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib. Compress::Raw::Zlib is included in the Perl package as a dual-life core module, and is vulnerable to CVE-2026-3381 due to a vendored version of zlib which has several vulnerabilities, including CVE-2026-27171. The bundled Compress::Raw::Zlib was updated to version 2.221 in Perl blead commit c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94.

NAME

Test2::Plugin::UTF8 - Test2 plugin to test with utf8.

DESCRIPTION

When used, this plugin will make tests work with utf8. This includes turning on the utf8 pragma and updating the Test2 output formatter to use utf8.

SYNOPSIS

use Test2::Plugin::UTF8;

This is similar to:

use utf8;
BEGIN {
    require Test2::Tools::Encoding;
    Test2::Tools::Encoding::set_encoding('utf8');
}

You can also disable the utf8 import by using 'encoding_only' to only enable utf8 encoding on the output format.

use Test2::Plugin::UTF8 qw(encoding_only);

import options

encoding_only

Does not import utf8 in your test and only enables the encoding mode on the output.

NOTES

This module currently sets output handles to have the ':utf8' output layer. Some might prefer ':encoding(utf-8)' which is more strict about verifying characters. There is a debate about whether or not encoding to utf8 from perl internals can ever fail, so it may not matter. This was also chosen because the alternative causes threads to segfault, see perlbug 31923.

SOURCE

The source code repository for Test2-Suite can be found at https://github.com/Test-More/Test2-Suite/.

MAINTAINERS

Chad Granum <exodist@cpan.org>

AUTHORS

Chad Granum <exodist@cpan.org>

COPYRIGHT

Copyright 2018 Chad Granum <exodist@cpan.org>.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

See http://dev.perl.org/licenses/