CVE-2026-4176 | Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 befo… | CVSS 9.8 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.

Metadata

CVE ID: CVE-2026-4176
State: PUBLISHED
Assigner: CPANSec
Reserved: 2026-03-14 16:17 UTC
Published: 2026-03-29 20:50 UTC
Last updated: 2026-03-30 15:35 UTC
Primary CWE: CWE-1395
CWE-1395 Dependency on Vulnerable Third-Party Component
Vendor / Product: SHAY / perl
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
SHAY	perl	—	5.9.4 < 5.40.4-RC1, 5.41.0 < 5.42.2-RC1, 5.43.0 < 5.43.9

Weakness (CWE)

CWE	Source	Description
CWE-1395	cna	CWE-1395 Dependency on Vulnerable Third-Party Component
CWE-1395	adp	CWE-1395 Dependency on Vulnerable Third-Party Component

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (6)