CVE-2026-3381

EUVD-2026-9520
Compress::Raw::Zlib versions through 2.219 for Perl use potentially insecure versions of zlib.

Compress::Raw::Zlib includes a copy of the zlib library. Compress::Raw::Zlib version 2.220 includes zlib 1.3.2, which addresses findings fron the 7ASecurity audit of zlib. The includes fixs for CVE-2026-27171.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 43.8%
Affected Products (NVD)
VendorProductVersion
pmqscompress\
𝑥
≤ 2.219
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libcompress-raw-zlib-perl
bookworm
2.204-1
fixed
bullseye
2.101-1
fixed
forky
2.222-1
fixed
sid
2.222-1
fixed
trixie
2.213-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libcompress-raw-zlib-perl
bionic
needs-triage
focal
needs-triage
jammy
not-affected
noble
not-affected
questing
not-affected
resolute
not-affected
xenial
needs-triage
perl
bionic
not-affected
focal
not-affected
jammy
not-affected
noble
not-affected
questing
not-affected
resolute
not-affected
trusty
not-affected
xenial
not-affected
Common Weakness Enumeration
References
https://7asecurity.com/blog/2026/02/zlib-7asecurity-audit/
https://github.com/madler/zlib
https://github.com/madler/zlib/releases/tag/v1.3.2
https://github.com/pmqs/Compress-Raw-Zlib/issues/41
https://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes
https://www.cve.org/CVERecord?id=CVE-2026-27171
https://www.zlib.net/