UBUNTU-CVE-2026-11526 (CVE-2026-11526)
Vulnerability from osv_ubuntu – Published: 2026-06-14 12:16 – Updated: 2026-06-30 16:18 – Source website
VLAI
Details
GD versions before 2.86 for Perl allow OS command injection and file overwrite via a 2-arg open() of filename arguments in _make_filehandle. GD::Image::_make_filehandle opens a filename argument with Perl's 2-arg open(), so a filename that begins or ends with a pipe ("| cmd", "cmd |") or begins with a redirect ("> path", ">> path") is run as a command or redirect rather than opened as a file. _make_filehandle is the single open path behind every filename-accepting constructor (new, newFromPng, newFromJpeg, and the rest); the in-memory *Data variants do not open a path and are unaffected. Any caller that forwards untrusted input to one of these constructors as a pathname can run an arbitrary command or truncate a file under the process UID.
Severity
9.8 (Critical)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libgd-perl",
"binary_version": "2.53-2.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "libgd-perl",
"purl": "pkg:deb/ubuntu/libgd-perl@2.53-2.1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.53-1build1",
"2.53-2",
"2.53-2build1",
"2.53-2.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libgd-perl",
"binary_version": "2.66-1build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "libgd-perl",
"purl": "pkg:deb/ubuntu/libgd-perl@2.66-1build1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.66-1build1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libgd-perl",
"binary_version": "2.71-2build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "libgd-perl",
"purl": "pkg:deb/ubuntu/libgd-perl@2.71-2build1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.71-2",
"2.71-2build1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libgd-perl",
"binary_version": "2.76-2ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "libgd-perl",
"purl": "pkg:deb/ubuntu/libgd-perl@2.76-2ubuntu0.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.76-2ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.73-1build2",
"2.76-2",
"2.76-2build1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libgd-perl",
"binary_version": "2.78-1ubuntu0.24.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "libgd-perl",
"purl": "pkg:deb/ubuntu/libgd-perl@2.78-1ubuntu0.24.04.1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.78-1ubuntu0.24.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.76-4build1",
"2.78-1",
"2.78-1build1",
"2.78-1build2",
"2.78-1build3"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libgd-perl",
"binary_version": "2.78-1ubuntu0.25.10.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "libgd-perl",
"purl": "pkg:deb/ubuntu/libgd-perl@2.78-1ubuntu0.25.10.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.78-1ubuntu0.25.10.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.78-1build4"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libgd-perl",
"binary_version": "2.84-2ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "libgd-perl",
"purl": "pkg:deb/ubuntu/libgd-perl@2.84-2ubuntu0.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.84-2ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.78-1build4",
"2.83-1",
"2.84-2"
]
}
],
"aliases": [],
"details": "GD versions before 2.86 for Perl allow OS command injection and file overwrite via a 2-arg open() of filename arguments in _make_filehandle. GD::Image::_make_filehandle opens a filename argument with Perl\u0027s 2-arg open(), so a filename that begins or ends with a pipe (\"| cmd\", \"cmd |\") or begins with a redirect (\"\u003e path\", \"\u003e\u003e path\") is run as a command or redirect rather than opened as a file. _make_filehandle is the single open path behind every filename-accepting constructor (new, newFromPng, newFromJpeg, and the rest); the in-memory *Data variants do not open a path and are unaffected. Any caller that forwards untrusted input to one of these constructors as a pathname can run an arbitrary command or truncate a file under the process UID.",
"id": "UBUNTU-CVE-2026-11526",
"modified": "2026-06-30T16:18:42Z",
"published": "2026-06-14T12:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-11526"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-11526"
},
{
"type": "REPORT",
"url": "https://lists.security.metacpan.org/cve-announce/msg/41004664/"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8484-1"
}
],
"related": [
"USN-8484-1"
],
"schema_version": "1.7.0",
"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": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-11526"
]
}
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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