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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- SHAY / perl5.9.4 – 5.40.4-RC1
- SHAY / perl5.41.0 – 5.42.2-RC1
- SHAY / perl5.43.0 – 5.43.9
References
- CONFIRMhttps://www.cve.org/CVERecord?id=CVE-2026-3381
- MAILING_LISThttps://lists.security.metacpan.org/cve-announce/msg/37638919/
- PATCHhttps://github.com/Perl/perl5/commit/c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94
- MISChttps://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes
- MISChttps://metacpan.org/release/SHAY/perl-5.40.4/changes
- MISChttps://metacpan.org/release/SHAY/perl-5.42.2/changes
Updated 29m ago · 8 sources