CPANSA-Compress-Raw-Zlib-2026-4176: Compress-Raw-Zlib vulnerability
| Publisher | giterlizzi | Document category | csaf_security_advisory |
|---|---|---|---|
| Initial release date | 2026-03-29T00:00:00 | Engine | CSAF Perl Toolkit 0.26 |
| Current release date | 2026-03-29T00:00:00 | Build Date | |
| Current version | 1 | Status | final |
| CVSS v3.1 Base Score | 9.8 | Severity | |
| Original language | Language | en | |
| Also referred to | |||
Vulnerability 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.
Vulnerabilities
CVE-2026-4176
Vulnerability DescriptionPerl 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 status
Known affected
| Product | Score | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Compress-Raw-Zlib less than 2.218 |
|
Fixed
- Compress-Raw-Zlib greater than or equal 2.218
giterlizzi
Namespace: https://github.com/giterlizzi/
gdt@cpan.org
References
- CPANSA-Compress-Raw-Zlib-2026-4176 JSON self
https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-compress-raw-zlib-2026-4176.json - https://github.com/Perl/perl5/commit/c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94 external
https://github.com/Perl/perl5/commit/c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94 - https://lists.security.metacpan.org/cve-announce/msg/37638919/ external
https://lists.security.metacpan.org/cve-announce/msg/37638919/ - https://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes external
https://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes - https://metacpan.org/release/SHAY/perl-5.40.4/changes external
https://metacpan.org/release/SHAY/perl-5.40.4/changes - https://metacpan.org/release/SHAY/perl-5.42.2/changes external
https://metacpan.org/release/SHAY/perl-5.42.2/changes - https://www.cve.org/CVERecord?id=CVE-2026-3381 external
https://www.cve.org/CVERecord?id=CVE-2026-3381 - http://www.openwall.com/lists/oss-security/2026/03/30/2 external
http://www.openwall.com/lists/oss-security/2026/03/30/2 - CVE-2026-4176 (NVD) external
https://nvd.nist.gov/vuln/detail/CVE-2026-4176
Revision history
| Version | Date of the revision | Summary of the revision |
|---|---|---|
| 1 | Sun Mar 29 00:00:00 2026 | First release |
Sharing rules
TLP:WHITE
For the TLP version see: https://www.first.org/tlp/