UBUNTU-CVE-2026-42496
- Source
- https://ubuntu.com/security/CVE-2026-42496
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42496.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-42496
- Upstream
- Related
- Published
- 2026-05-26T02:16:00Z
- Modified
- 2026-06-24T19:45:26.486279178Z
- Severity
-
- 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory. makespecial_file() passes the tar header's linkname to symlink() without validating it against absolute paths or .. segments. The secure-extract mode check that guards regular file extraction does not cover the symlink target. A subsequent open through the extracted name reads or writes the attacker chosen path.
- References
-
- https://ubuntu.com/security/CVE-2026-42496
- https://www.cve.org/CVERecord?id=CVE-2026-42496
- https://lists.security.metacpan.org/cve-announce/msg/40396459/
- https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch
- https://metacpan.org/release/BINGOS/Archive-Tar-3.08/changes
- https://www.cve.org/CVERecord?id=CVE-2026-42497
- https://ubuntu.com/security/notices/USN-8467-1
Affected packages
Ubuntu:22.04:LTS
perl
Package
- Name
- perl
- Purl
- pkg:deb/ubuntu/perl?arch=source&distro=jammy
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.34.0-3ubuntu1.7
Affected versions
5.*
5.32.1-3ubuntu3
5.34.0-3ubuntu1
5.34.0-3ubuntu1.1
5.34.0-3ubuntu1.2
5.34.0-3ubuntu1.3
5.34.0-3ubuntu1.4
5.34.0-3ubuntu1.5
Ecosystem specific
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "5.34.0-3ubuntu1.7",
"binary_name": "libperl5.34"
},
{
"binary_version": "5.34.0-3ubuntu1.7",
"binary_name": "perl"
},
{
"binary_version": "5.34.0-3ubuntu1.7",
"binary_name": "perl-base"
},
{
"binary_version": "5.34.0-3ubuntu1.7",
"binary_name": "perl-debug"
},
{
"binary_version": "5.34.0-3ubuntu1.7",
"binary_name": "perl-modules-5.34"
}
]
}Ubuntu:24.04:LTS
perl
Package
- Name
- perl
- Purl
- pkg:deb/ubuntu/perl?arch=source&distro=noble
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.38.2-3.2ubuntu0.3
Affected versions
5.*
5.36.0-9ubuntu1
5.36.0-10ubuntu1
5.38.2-3
5.38.2-3.2
5.38.2-3.2build1
5.38.2-3.2build2
5.38.2-3.2build2.1
5.38.2-3.2ubuntu0.1
5.38.2-3.2ubuntu0.2
Ecosystem specific
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "5.38.2-3.2ubuntu0.3",
"binary_name": "libperl5.38t64"
},
{
"binary_version": "5.38.2-3.2ubuntu0.3",
"binary_name": "perl"
},
{
"binary_version": "5.38.2-3.2ubuntu0.3",
"binary_name": "perl-base"
},
{
"binary_version": "5.38.2-3.2ubuntu0.3",
"binary_name": "perl-debug"
},
{
"binary_version": "5.38.2-3.2ubuntu0.3",
"binary_name": "perl-modules-5.38"
}
]
}Ubuntu:25.10
perl
Package
- Name
- perl
- Purl
- pkg:deb/ubuntu/perl?arch=source&distro=questing
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected
Ecosystem specific
{
"binaries": [
{
"binary_version": "5.40.1-6build1",
"binary_name": "libperl5.40"
},
{
"binary_version": "5.40.1-6build1",
"binary_name": "perl"
},
{
"binary_version": "5.40.1-6build1",
"binary_name": "perl-base"
},
{
"binary_version": "5.40.1-6build1",
"binary_name": "perl-debug"
},
{
"binary_version": "5.40.1-6build1",
"binary_name": "perl-modules-5.40"
}
]
}Ubuntu:26.04:LTS
perl
Package
- Name
- perl
- Purl
- pkg:deb/ubuntu/perl?arch=source&distro=resolute
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.40.1-7ubuntu0.1
Ecosystem specific
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "5.40.1-7ubuntu0.1",
"binary_name": "libperl5.40"
},
{
"binary_version": "5.40.1-7ubuntu0.1",
"binary_name": "perl"
},
{
"binary_version": "5.40.1-7ubuntu0.1",
"binary_name": "perl-base"
},
{
"binary_version": "5.40.1-7ubuntu0.1",
"binary_name": "perl-debug"
},
{
"binary_version": "5.40.1-7ubuntu0.1",
"binary_name": "perl-modules-5.40"
}
]
}Ubuntu:Pro:14.04:LTS
perl
Package
- Name
- perl
- Purl
- pkg:deb/ubuntu/perl?arch=source&distro=esm-infra-legacy%2Ftrusty
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.18.2-2ubuntu1.7+esm7
Affected versions
5.*
5.14.2-21build1
5.18.1-4
5.18.1-4build1
5.18.1-5
5.18.2-2
5.18.2-2ubuntu1
5.18.2-2ubuntu1.1
5.18.2-2ubuntu1.3
5.18.2-2ubuntu1.4
5.18.2-2ubuntu1.6
5.18.2-2ubuntu1.7
5.18.2-2ubuntu1.7+esm3
5.18.2-2ubuntu1.7+esm4
5.18.2-2ubuntu1.7+esm5
Ecosystem specific
{
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_version": "5.18.2-2ubuntu1.7+esm7",
"binary_name": "libcgi-fast-perl"
},
{
"binary_version": "5.18.2-2ubuntu1.7+esm7",
"binary_name": "libperl5.18"
},
{
"binary_version": "5.18.2-2ubuntu1.7+esm7",
"binary_name": "perl"
},
{
"binary_version": "5.18.2-2ubuntu1.7+esm7",
"binary_name": "perl-base"
},
{
"binary_version": "5.18.2-2ubuntu1.7+esm7",
"binary_name": "perl-debug"
},
{
"binary_version": "5.18.2-2ubuntu1.7+esm7",
"binary_name": "perl-modules"
}
]
}Ubuntu:Pro:18.04:LTS
perl
Package
- Name
- perl
- Purl
- pkg:deb/ubuntu/perl?arch=source&distro=esm-infra%2Fbionic
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.26.1-6ubuntu0.7+esm2
Affected versions
5.*
5.26.0-8ubuntu1
5.26.1-2ubuntu1
5.26.1-3
5.26.1-4
5.26.1-4build1
5.26.1-5
5.26.1-6
5.26.1-6ubuntu0.1
5.26.1-6ubuntu0.2
5.26.1-6ubuntu0.3
5.26.1-6ubuntu0.5
5.26.1-6ubuntu0.6
5.26.1-6ubuntu0.7
Ecosystem specific
{
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_version": "5.26.1-6ubuntu0.7+esm2",
"binary_name": "libperl5.26"
},
{
"binary_version": "5.26.1-6ubuntu0.7+esm2",
"binary_name": "perl"
},
{
"binary_version": "5.26.1-6ubuntu0.7+esm2",
"binary_name": "perl-base"
},
{
"binary_version": "5.26.1-6ubuntu0.7+esm2",
"binary_name": "perl-debug"
},
{
"binary_version": "5.26.1-6ubuntu0.7+esm2",
"binary_name": "perl-modules-5.26"
}
]
}Ubuntu:Pro:20.04:LTS
perl
Package
- Name
- perl
- Purl
- pkg:deb/ubuntu/perl?arch=source&distro=esm-infra%2Ffocal
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.30.0-9ubuntu0.5+esm2
Affected versions
5.*
5.28.1-6build1
5.30.0-7
5.30.0-9
5.30.0-9build1
5.30.0-9ubuntu0.2
5.30.0-9ubuntu0.3
5.30.0-9ubuntu0.4
5.30.0-9ubuntu0.5
Ecosystem specific
{
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_version": "5.30.0-9ubuntu0.5+esm2",
"binary_name": "libperl5.30"
},
{
"binary_version": "5.30.0-9ubuntu0.5+esm2",
"binary_name": "perl"
},
{
"binary_version": "5.30.0-9ubuntu0.5+esm2",
"binary_name": "perl-base"
},
{
"binary_version": "5.30.0-9ubuntu0.5+esm2",
"binary_name": "perl-debug"
},
{
"binary_version": "5.30.0-9ubuntu0.5+esm2",
"binary_name": "perl-modules-5.30"
}
]
}