CVE-2026-4176

CRITICAL

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

Title source: cna
STIX 2.1

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 (7)

Core 7

Scores

CVSS v3 9.8
EPSS 0.0068
EPSS Percentile 47.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-1395
Status published
Products (4)
perl/perl 5.9.4 - 5.40.4
SHAY/perl 5.41.0 - 5.42.2-RC1
SHAY/perl 5.43.0 - 5.43.9
SHAY/perl 5.9.4 - 5.40.4-RC1
Published Mar 29, 2026
Tracked Since Mar 30, 2026