PT-2026-28638 · Cpan+2 · Compress::Raw::Zlib+2

Bernhard Schmalhofer · CVE-2026-4176 · Published 2026-03-29 · Updated 2026-07-13

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Perl versions 5.9.4 through 5.40.4-RC1 Perl versions 5.41.0 through 5.42.2-RC1 Perl versions 5.43.0 through 5.43.9

Description Perl includes a vulnerable version of Compress::Raw::Zlib. The issue is related to the Compress::Raw::Zlib module.

Recommendations Upgrade Perl to a version after 5.40.4-RC1. Upgrade Perl to a version after 5.42.2-RC1. Upgrade Perl to a version after 5.43.9. Install Compress::Raw::Zlib 2.220 or later from CPAN.

Exploit

Fix

DoS

Weakness Enumeration

CWE-1395

CWE-664

Related Identifiers

BDU:2026-10819

CVE-2026-4176

Affected Products

Compress::Raw::Zlib

Perl

Red Os

References · 33

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4176.json · Exploit
• https://github.com/Perl/perl5/commit/c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94 · Patch
• https://osv.dev/vulnerability/ALPINE-CVE-2026-4176 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-10819 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-3381 · Security Note
• https://lists.security.metacpan.org/cve-announce/msg/37638919 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-4176 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-4176 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-4176 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-4176 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-4176 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-4176 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-4176 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-4176 · Vendor Advisory
• https://github.com/Perl/perl5 · Note