CVE-2026-4176 in SHAY perl
Summary
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.
Responsible
CPANSec
Reservation
03/14/2026
Disclosure
03/30/2026
Entries
| ID | Vulnerability | CWE | Base | Temp | 0day | Today | Exp | KEV | EPSS | CTI | Cou | CVE |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 354135 | SHAY perl Compress Raw vulnerable third-party component | 1395 | 5.6 | 5.4 | $0-$5k | $0-$5k | Not defined | 0.00000 | 4.72 | Official fix | CVE-2026-4176 |