CVE-2026-4176CRITICAL 9.8EPSS p47.4%

CVE-2026-4176CVE-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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.68% probability of exploitation · percentile 47.4% · 2026-06-19T12:03:05Z
Published2026-03-29
Last modified2026-04-22

References

  1. https://github.com/Perl/perl5/commit/c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94
  2. https://lists.security.metacpan.org/cve-announce/msg/37638919/
  3. https://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes
  4. https://metacpan.org/release/SHAY/perl-5.40.4/changes
  5. https://metacpan.org/release/SHAY/perl-5.42.2/changes
  6. https://www.cve.org/CVERecord?id=CVE-2026-3381
  7. http://www.openwall.com/lists/oss-security/2026/03/30/2

Related by meaning· 6

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CVE-2026-3381
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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.