CVE-2025-68480
Full vulnerability record from the local CVENow database.
Description
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.
Severity
MEDIUM
CVSS score
5.3
(v3.1)
Vulnerability status
Deferred
Source identifier
Published
2025-12-22 22:16:09.457000
Last modified
2026-10-19 22:10:00.130000
View original CVE JSON
{
"id": "CVE-2025-68480",
"sourceIdentifier": "[email protected]",
"published": "2025-12-22T22:16:09.457",
"lastModified": "2026-10-19T22:10:00.130",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "Marshmallow es una biblioteca ligera para convertir objetos complejos a y desde tipos de datos simples de Python. En versiones desde 3.0.0rc1 hasta la versión 3.26.2 anterior y desde 4.0.0 hasta la versión 4.1.2 anterior, Schema.load(data, many=True) es vulnerable a ataques de denegación de servicio. Una solicitud de tamaño moderado puede consumir una cantidad desproporcionada de tiempo de CPU. Este problema se ha corregido en la versión 3.26.2 y 4.1.2."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "marshmallow-code",
"product": "marshmallow",
"versions": [
{
"version": ">= 3.0.0rc1, < 3.26.2",
"status": "affected"
},
{
"version": ">= 4.0.0, < 4.1.2",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "LOW"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2025-12-22T21:34:43.372078Z",
"id": "CVE-2025-68480",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-405"
}
]
}
],
"references": [
{
"url": "https://github.com/marshmallow-code/marshmallow/commit/d24a0c9df061c4daa92f71cf85aca25b83eee508",
"source": "[email protected]"
},
{
"url": "https://github.com/marshmallow-code/marshmallow/security/advisories/GHSA-428g-f7cq-pgp5",
"source": "[email protected]"
}
]
}