Vulnerability record · CVE-2026-4176 · published 29 March 2026

CVE-2026-4176: Perl vulnerability

Perl · Perl

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.

9.8 CVSS 3.1 Critical EPSS 0.81% · top 44.8%

9.8CVSS 3.1 base score

0.81%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

7References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Perl Perl

References

Link	Tags
https://github.com/Perl/perl5/commit/c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94	Patch
https://lists.security.metacpan.org/cve-announce/msg/37638919/	Third Party Advisory
https://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes	Release Notes
https://metacpan.org/release/SHAY/perl-5.40.4/changes	Release Notes
https://metacpan.org/release/SHAY/perl-5.42.2/changes	Release Notes
https://www.cve.org/CVERecord?id=CVE-2026-3381	Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/03/30/2	Mailing ListThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-4176), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.