CVE-2023-30798
Estado: ModificadaAlta (7.5)—
There MultipartParser usage in Encode's Starlette python framework before versions 0.25.0 allows an unauthenticated and remote attacker to specify any number of form fields or files which can cause excessive memory usage resulting in denial of service of the HTTP service.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.30%
- Percentil entre todas las CVEs puntuadas: 69
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-400
- CWE-400
Referencias
- https://github.com/encode/starlette/commit/8c74c2c8dba7030154f8af18e016136bea1938fa
- https://github.com/encode/starlette/security/advisories/GHSA-74m5-2c7w-9w3x
- https://vulncheck.com/advisories/starlette-multipartparser-dos
- https://github.com/encode/starlette/commit/8c74c2c8dba7030154f8af18e016136bea1938fa
- https://github.com/encode/starlette/security/advisories/GHSA-74m5-2c7w-9w3x
- https://vulncheck.com/advisories/starlette-multipartparser-dos
JSON original (NVD)
Mostrar
{
"id": "CVE-2023-30798",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2023-30798",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2025-02-04T20:30:33.208418Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "disclosure@vulncheck.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "disclosure@vulncheck.com",
"affectedData": [
{
"repo": "https://github.com/encode/starlette",
"vendor": "Encode",
"product": "Starlette",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "0.25.0",
"versionType": "python"
}
],
"platforms": [
"all"
],
"packageURL": "pkg:pypi/starlette",
"packageName": "starlette",
"collectionURL": "https://pypi.org/project/starlette/",
"defaultStatus": "unaffected"
}
]
}
],
"published": "2023-04-21T16:15:07.510",
"references": [
{
"url": "https://github.com/encode/starlette/commit/8c74c2c8dba7030154f8af18e016136bea1938fa",
"tags": [
"Patch"
],
"source": "disclosure@vulncheck.com"
},
{
"url": "https://github.com/encode/starlette/security/advisories/GHSA-74m5-2c7w-9w3x",
"tags": [
"Mitigation",
"Vendor Advisory"
],
"source": "disclosure@vulncheck.com"
},
{
"url": "https://vulncheck.com/advisories/starlette-multipartparser-dos",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "disclosure@vulncheck.com"
},
{
"url": "https://github.com/encode/starlette/commit/8c74c2c8dba7030154f8af18e016136bea1938fa",
"tags": [
"Patch"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://github.com/encode/starlette/security/advisories/GHSA-74m5-2c7w-9w3x",
"tags": [
"Mitigation",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://vulncheck.com/advisories/starlette-multipartparser-dos",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "disclosure@vulncheck.com",
"description": [
{
"lang": "en",
"value": "CWE-400"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-400"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "There MultipartParser usage in Encode's Starlette python framework before versions 0.25.0 allows an unauthenticated and remote attacker to specify any number of form fields or files which can cause excessive memory usage resulting in denial of service of the HTTP service."
}
],
"lastModified": "2026-07-15T02:17:07.250",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:encode:starlette:*:*:*:*:*:python:*:*",
"vulnerable": true,
"matchCriteriaId": "B31CE462-E658-420A-96B2-76266F0DC699",
"versionEndExcluding": "0.25.0"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "disclosure@vulncheck.com"
}