CVE-2026-4176
Critical · 9.8CVSS
9.8
EPSS
0.8%
Published
Mar 29, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Chainguard | miniperl | 0 | 5.42.2-r0 |
| Chainguard | perl | 0 | 5.42.2-r0 |
| Wolfi | miniperl | 0 | 5.42.2-r0 |
| Wolfi | perl | 0 | 5.42.2-r0 |