Critical severity9.8NVD Advisory· Published Mar 29, 2026· Updated Apr 22, 2026
CVE-2026-4176
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.
Affected products
1Patches
1c75ae9cc1642https://github.com/Perl/perl5via nvd-ref
Vulnerability mechanics
Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
7- github.com/Perl/perl5/commit/c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94nvdPatch
- www.openwall.com/lists/oss-security/2026/03/30/2nvdMailing ListThird Party Advisory
- lists.security.metacpan.org/cve-announce/msg/37638919/nvdThird Party Advisory
- www.cve.org/CVERecordnvdThird Party Advisory
- metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/ChangesnvdRelease Notes
- metacpan.org/release/SHAY/perl-5.40.4/changesnvdRelease Notes
- metacpan.org/release/SHAY/perl-5.42.2/changesnvdRelease Notes
News mentions
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