usn-8467-1
Vulnerability from osv_ubuntu
Published
2026-06-24 13:14
Modified
2026-07-13 13:51
Summary
perl vulnerabilities
Details
It was discovered that Perl's Archive::Tar module incorrectly handled symlink and hardlink targets during extraction. An attacker could use this issue to read or overwrite arbitrary files outside the extraction directory. (CVE-2026-42496)
It was discovered that Perl had a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds. An attacker could use this issue to cause a denial of service or possibly execute arbitrary code. (CVE-2026-8376)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-8376",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-42496",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:14.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"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",
"binary_version": "5.18.2-2ubuntu1.7+esm7"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "perl",
"purl": "pkg:deb/ubuntu/perl@5.18.2-2ubuntu1.7+esm7?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.18.2-2ubuntu1.7+esm7"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-8376",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-42496",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libperl5.22",
"binary_version": "5.22.1-9ubuntu0.9+esm2"
},
{
"binary_name": "perl",
"binary_version": "5.22.1-9ubuntu0.9+esm2"
},
{
"binary_name": "perl-base",
"binary_version": "5.22.1-9ubuntu0.9+esm2"
},
{
"binary_name": "perl-debug",
"binary_version": "5.22.1-9ubuntu0.9+esm2"
},
{
"binary_name": "perl-modules-5.22",
"binary_version": "5.22.1-9ubuntu0.9+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "perl",
"purl": "pkg:deb/ubuntu/perl@5.22.1-9ubuntu0.9+esm2?arch=source\u0026distro=esm-infra-legacy/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.22.1-9ubuntu0.9+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.20.2-6",
"5.22.1-3",
"5.22.1-4",
"5.22.1-5",
"5.22.1-7",
"5.22.1-8",
"5.22.1-9",
"5.22.1-9ubuntu0.2",
"5.22.1-9ubuntu0.3",
"5.22.1-9ubuntu0.5",
"5.22.1-9ubuntu0.6",
"5.22.1-9ubuntu0.9",
"5.22.1-9ubuntu0.9+esm1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-8376",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-42496",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"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",
"binary_version": "5.26.1-6ubuntu0.7+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "perl",
"purl": "pkg:deb/ubuntu/perl@5.26.1-6ubuntu0.7+esm2?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.26.1-6ubuntu0.7+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-8376",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-42496",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"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",
"binary_version": "5.30.0-9ubuntu0.5+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "perl",
"purl": "pkg:deb/ubuntu/perl@5.30.0-9ubuntu0.5+esm2?arch=source\u0026distro=esm-infra/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.30.0-9ubuntu0.5+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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"
]
}
],
"aliases": [],
"details": "It was discovered that Perl\u0027s Archive::Tar module incorrectly handled\nsymlink and hardlink targets during extraction. An attacker could use this\nissue to read or overwrite arbitrary files outside the extraction\ndirectory. (CVE-2026-42496)\n\nIt was discovered that Perl had a heap buffer overflow when compiling\nregular expressions with a repeated fixed string on 32-bit builds. An\nattacker could use this issue to cause a denial of service or possibly\nexecute arbitrary code. (CVE-2026-8376)",
"id": "USN-8467-1",
"modified": "2026-07-13T13:51:35Z",
"published": "2026-06-24T13:14:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8467-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-8376"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-42496"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "perl vulnerabilities",
"upstream": [
"UBUNTU-CVE-2026-8376",
"UBUNTU-CVE-2026-42496"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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