DEBIAN-CVE-2026-48959

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Source
https://security-tracker.debian.org/tracker/CVE-2026-48959
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48959.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-48959
Upstream
Published
2026-05-27T04:16:31Z
Modified
2026-09-14T17:03:17Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward. fastForward() compares length $offset (the digit count of the offset, 1 to 19) against the chunk size $c instead of $offset itself, so $c shrinks from 16 KiB to 1-19 bytes per iteration. Extracting a named entry from an attacker supplied zip via IO::Uncompress::Unzip->new($zip, Name => $target) drives a per-byte read loop scaling with the entry's compressed size, up to the non-Zip64 4 GiB cap.

References

Affected packages

Debian:12
libio-compress-perl

Package

Name
libio-compress-perl
Purl
pkg:deb/debian/libio-compress-perl?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.204-1
2.206-1
2.207-1
2.208-1
2.211-1
2.212-1
2.213-1
2.214-1
2.217-1
2.219-1
2.219-2
2.220-1
2.221-1
2.222-1
2.223-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48959.json"
perl

Package

Name
perl
Purl
pkg:deb/debian/perl?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

5.*
5.36.0-7
5.36.0-7+deb12u1
5.36.0-7+deb12u2
5.36.0-7+deb12u3
5.36.0-8
5.36.0-9
5.36.0-10
5.38.0~rc2-1
5.38.0-1
5.38.0-2
5.38.2-1
5.38.2-2
5.38.2-3
5.38.2-3.1
5.38.2-3.2
5.38.2-3.2+hurd.1
5.38.2-4
5.38.2-5
5.40.0~rc1-1
5.40.0-1
5.40.0-2
5.40.0-3
5.40.0-4
5.40.0-5
5.40.0-6
5.40.0-7
5.40.0-8
5.40.1-1
5.40.1-2
5.40.1-3
5.40.1-4
5.40.1-5
5.40.1-6
5.40.1-7
5.40.1-8
5.42.0-1
5.42.0-2
5.42.0-3
5.42.2-1
5.42.2-2
5.42.2-3
5.42.3-1
5.44.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48959.json"
Debian:13
libio-compress-perl

Package

Name
libio-compress-perl
Purl
pkg:deb/debian/libio-compress-perl?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.213-1+deb13u1

Affected versions

2.*
2.213-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48959.json"
perl

Package

Name
perl
Purl
pkg:deb/debian/perl?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.40.1-6+deb13u1

Affected versions

5.*
5.40.1-6

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48959.json"
Debian:14
libio-compress-perl

Package

Name
libio-compress-perl
Purl
pkg:deb/debian/libio-compress-perl?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.220-1

Affected versions

2.*
2.213-1
2.214-1
2.217-1
2.219-1
2.219-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48959.json"
perl

Package

Name
perl
Purl
pkg:deb/debian/perl?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.40.1-8

Affected versions

5.*
5.40.1-6
5.40.1-7

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48959.json"