SecuriTricks - CVE-2026-4176

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.

Product(s) Impacted

Vendor	Product	Versions
Perl	Perl	<5.40.4-rc1, <5.42.2-rc1, <5.43.9

Weaknesses

Common security weaknesses mapped to this vulnerability.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	perl	perl	<5.40.4-rc1	/	/	/	/	/	/	/
a	perl	perl	<5.42.2-rc1	/	/	/	/	/	/	/
a	perl	perl	<5.43.9	/	/	/	/	/	/	/

References

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

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

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

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

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

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

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

CVSS Score

9.8 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: NONE
Scope: UNCHANGED
Confidentiality Impact: HIGH
Integrity Impact: HIGH
Availability Impact: HIGH

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

View Vector String

Timeline

Published: March 29, 2026, 9:16 p.m.
Last Modified: March 30, 2026, 4:16 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

9b29abf9-4ab0-4765-b253-1875cd9b441e

CVE-2026-4176