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Fencer Vulns
critical 9.8

CVE-2026-3381 json

Compress::Raw::Zlib versions through 2.219 for Perl use potentially insecure versions of zlib

published 2026-03-05 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-9520

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

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.

Patch / fix

  • libcompress-raw-zlib-perl Debian 14, Debian 13, Debian 12 2.011-2

debian advisories DEBIAN-CVE-2026-3381

  • perl-Compress-Raw-Zlib openSUSE Leap 16.0 2.222-bp160.1.1
  • perl-Compress-Raw-Zlib openSUSE Tumbleweed 2.222-1.1

opensuse advisories openSUSE-SU-2026:21142-1openSUSE-SU-2026:10320-1

  • perl-compress-raw-zlib Alpine 3.24, Alpine 3.23, Alpine 3.22 +2 more 2.222-r0

alpine advisories ALPINE-CVE-2026-3381

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-3381 updated cvss 5.3

compress-raw-zlib: Compress::Raw::Zlib: Vulnerabilities due to outdated zlib library

  • Red Hat Enterprise Linux 7 perl-Compress-Raw-Zlib Red Hat Enterprise Linux 8 perl-Compress-Raw-Zlib Red Hat Enterprise Linux 9 perl-Compress-Raw-Zlib Red Hat Enterprise Linux 10 perl-Compress-Raw-Zlib
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
8 mo ago

Exploit prediction

0.62% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • PMQS Compress::Raw::Zlib

Classification

Weakness
  • CWE-1395 Dependency on Vulnerable Third-Party Component
  • CWE-1284 Improper Validation of Specified Quantity in Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.