CVE catalog

CVE-2026-4176

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 p

[CVE catalog]

Severity: Critical · CVSS 9.8
Published: Mar 29, 2026, 8:50:51 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.73% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	perl	sid	`5.42.3-1`	fixed
Debian	perl	forky	`5.42.3-1`	fixed
Debian	perl	trixie	`5.40.1-6+deb13u1`	fixed
Debian	perl	bookworm	`5.36.0-7+deb12u3`	fixed
Debian	perl	bookworm-security	`5.36.0-7+deb12u4`	fixed
Cpe	perl	Not reported	`5.40.4`	fixed
Cpe	perl	Not reported	`5.42.2`	fixed
Cpe	perl	Not reported	`5.43.9`	fixed
Cpe	perl	Not reported	`5.10.0-21`	fixed
Alpine	perl	3.24	`5.42.2-r0`	fixed
Ubuntu	perl	pro	`5.28.1-6build1`	vulnerable
Ubuntu	perl	pro	`5.30.0-7`	vulnerable
Ubuntu	perl	pro	`5.30.0-9`	vulnerable
Ubuntu	perl	pro	`5.30.0-9build1`	vulnerable
Ubuntu	perl	pro	`5.30.0-9ubuntu0.2`	vulnerable
Ubuntu	perl	pro	`5.30.0-9ubuntu0.3`	vulnerable
Ubuntu	perl	pro	`5.30.0-9ubuntu0.4`	vulnerable
Ubuntu	perl	pro	`5.30.0-9ubuntu0.5`	vulnerable
Ubuntu	perl	pro	`5.30.0-9ubuntu0.5+esm2`	vulnerable
Ubuntu	perl	pro	`5.30.0-9ubuntu0.5+esm3`	vulnerable
Ubuntu	perl	pro	`5.30.0-9ubuntu0.5+esm4`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	perl	source	sid	`5.10.0-21`	not yet assigned	Not reported	Not reported
Debian	perl	source	forky	`5.10.0-21`	not yet assigned	Not reported	Not reported
Debian	perl	source	trixie	`5.10.0-21`	not yet assigned	Not reported	Not reported
Debian	perl	source	bookworm	`5.10.0-21`	not yet assigned	Not reported	Not reported
Cpe	perl	cpe	Not reported	`5.40.4`	Not reported	Not reported	Not reported
Cpe	perl	cpe	Not reported	`5.42.2`	Not reported	Not reported	Not reported
Cpe	perl	cpe	Not reported	`5.43.9`	Not reported	Not reported	Not reported
Cpe	perl	cpe	Not reported	`5.10.0-21`	Not reported	Not reported	Not reported
Alpine	perl	apk	3.24	`5.42.2-r0`	Not reported	ALPINE-CVE-2026-4176	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libperl5.36]Fixed
Source package: [perl]
Details (4)
- 5.36.0-7+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · amd64 · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · arm64 · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
[libperl-dev]Fixed
Source package: [perl]
Details (4)
- 5.36.0-7+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · amd64 · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · arm64 · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
[perl]Fixed
Details (4)
- 5.36.0-7+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · amd64 · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · arm64 · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
[perl-base]Fixed
Source package: [perl]
Details (4)
- 5.36.0-7+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · amd64 · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · arm64 · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
[perl-debug]Fixed
Source package: [perl]
Details (4)
- 5.36.0-7+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · amd64 · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · arm64 · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
[perl-doc]Fixed
Source package: [perl]
Details (4)
- 5.36.0-7+deb12u3 · all · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · all · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · all · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · all · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
[perl-modules-5.36]Fixed
Source package: [perl]
Details (4)
- 5.36.0-7+deb12u3 · all · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · all · bookworm
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · all · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · all · bookworm-security
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · bookworm; nvd · perl · debian · 12

[Debian 13 (Trixie)]

[libperl5.40]Fixed
Source package: [perl]
Details (2)
- 5.40.1-6 · amd64 · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13
- 5.40.1-6 · arm64 · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13
[libperl-dev]Fixed
Source package: [perl]
Details (2)
- 5.40.1-6 · amd64 · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13
- 5.40.1-6 · arm64 · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13
[perl]Fixed
Details (2)
- 5.40.1-6 · amd64 · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13
- 5.40.1-6 · arm64 · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13
[perl-base]Fixed
Source package: [perl]
Details (2)
- 5.40.1-6 · amd64 · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13
- 5.40.1-6 · arm64 · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13
[perl-debug]Fixed
Source package: [perl]
Details (2)
- 5.40.1-6 · amd64 · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13
- 5.40.1-6 · arm64 · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13
[perl-doc]Fixed
Source package: [perl]
Details (2)
- 5.40.1-6 · all · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13
- 5.40.1-6 · all · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13
[perl-modules-5.40]Fixed
Source package: [perl]
Details (2)
- 5.40.1-6 · all · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13
- 5.40.1-6 · all · trixie
  Fixed · Fixed: 5.10.0-21
  nvd · perl · debian · 13

Observed: Oct 23, 2026, 10:36:27 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]