CVE-2026-4176

CRITICAL9.8

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

Published Mar 29, 2026

Modified 3 weeks ago

Details

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.

References

WEB

http://www.openwall.com/lists/oss-security/2026/03/30/2

FIX

https://github.com/Perl/perl5/commit/c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94

ADVISORY

https://lists.security.metacpan.org/cve-announce/msg/37638919/

WEB

https://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes

WEB

https://metacpan.org/release/SHAY/perl-5.40.4/changes

WEB