CVE-2026-4176

critical

Description

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

Advisories
More

https://www.cve.org/CVERecord?id=CVE-2026-3381

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

https://metacpan.org/release/SHAY/perl-5.42.2/changes

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

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

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

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

Details

Source: Mitre, NVD

Published: 2026-03-29

Updated: 2026-03-30

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical