UBUNTU-CVE-2025-68480 (CVE-2025-68480)
Vulnerability from osv_ubuntu – Published: 2025-12-22 22:16 – Updated: 2026-10-17 09:36 – Source websiteMarshmallow is a lightweight library for converting complex objects to and from simple Python datatypes. In versions from 3.0.0rc1 to before 3.26.2 and from 4.0.0 to before 4.1.2, Schema.load(data, many=True) is vulnerable to denial of service attacks. A moderately sized request can consume a disproportionate amount of CPU time. This issue has been patched in version 3.26.2 and 4.1.2.
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "python3-marshmallow",
"binary_version": "3.4.0-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "python-marshmallow",
"purl": "pkg:deb/ubuntu/python-marshmallow@3.4.0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4.0-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.0.0b14-1",
"3.2.1-1",
"3.2.2-1",
"3.3.0-1",
"3.4.0-1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "python3-marshmallow",
"binary_version": "3.13.0-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "python-marshmallow",
"purl": "pkg:deb/ubuntu/python-marshmallow@3.13.0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.13.0-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.10.0-1",
"3.13.0-1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "python3-marshmallow",
"binary_version": "3.20.1-1.1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "python-marshmallow",
"purl": "pkg:deb/ubuntu/python-marshmallow@3.20.1-1.1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.20.1-1.1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.18.0-1",
"3.20.1-1.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-marshmallow",
"binary_version": "3.26.1-0.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "python-marshmallow",
"purl": "pkg:deb/ubuntu/python-marshmallow@3.26.1-0.2?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.26.1-0.2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-marshmallow",
"binary_version": "3.26.2-0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.10",
"name": "python-marshmallow",
"purl": "pkg:deb/ubuntu/python-marshmallow@3.26.2-0.1?arch=source\u0026distro=stonking"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.26.1-0.4",
"3.26.2-0.1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "python3-marshmallow",
"binary_version": "3.26.1-0.4ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:26.04:LTS",
"name": "python-marshmallow",
"purl": "pkg:deb/ubuntu/python-marshmallow@3.26.1-0.4ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.26.1-0.4ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.26.1-0.2",
"3.26.1-0.3",
"3.26.1-0.4"
]
}
],
"aliases": [],
"details": "Marshmallow is a lightweight library for converting complex objects to and from simple Python datatypes. In versions from 3.0.0rc1 to before 3.26.2 and from 4.0.0 to before 4.1.2, Schema.load(data, many=True) is vulnerable to denial of service attacks. A moderately sized request can consume a disproportionate amount of CPU time. This issue has been patched in version 3.26.2 and 4.1.2.",
"id": "UBUNTU-CVE-2025-68480",
"modified": "2026-10-17T09:36:58Z",
"published": "2025-12-22T22:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-68480"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-68480"
},
{
"type": "REPORT",
"url": "https://github.com/marshmallow-code/marshmallow/security/advisories/GHSA-428g-f7cq-pgp5"
},
{
"type": "REPORT",
"url": "https://github.com/marshmallow-code/marshmallow/commit/218d98a785d3bd25dad8880bb07e9cce70340f31"
},
{
"type": "REPORT",
"url": "https://github.com/marshmallow-code/marshmallow/commit/70141f4180fb94ced3544cdefdaff89172dd3956"
},
{
"type": "REPORT",
"url": "https://github.com/marshmallow-code/marshmallow/commit/36f87877d0e889e682386a0121eabe030cde57b1"
},
{
"type": "REPORT",
"url": "https://github.com/marshmallow-code/marshmallow/commit/0356a3f1c307830f8ded56d823abca5611c594c9"
},
{
"type": "REPORT",
"url": "https://github.com/marshmallow-code/marshmallow/commit/6d4a17dad54ea9711040c6aa6ba4d59267242a41"
},
{
"type": "REPORT",
"url": "https://github.com/marshmallow-code/marshmallow/commit/489a8d421dc7955bb53b89e962d69465fbc5b6af"
},
{
"type": "REPORT",
"url": "https://github.com/marshmallow-code/marshmallow/commit/d24a0c9df061c4daa92f71cf85aca25b83eee508"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8225-1"
}
],
"related": [
"USN-8225-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-68480"
]
}
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