{
"id": "GHSA-8554-jxcw-454q",
"aliases": [
"CVE-2019-9710"
],
"details": "An issue was discovered in webargs before 5.1.3, as used with marshmallow and other products. JSON parsing uses a short-lived cache to store the parsed JSON body. This cache is not thread-safe, meaning that incorrect JSON payloads could have been parsed for concurrent requests.",
"summary": "Webargs mishandles concurrent JSON parsing",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.1.3"
}
]
}
],
"package": {
"name": "webargs",
"ecosystem": "PyPI"
}
}
],
"modified": "2025-08-04T21:03:04Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P"
}
],
"published": "2019-03-12T15:16:12Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9710",
"type": "ADVISORY"
},
{
"url": "https://github.com/marshmallow-code/webargs/issues/371",
"type": "WEB"
},
{
"url": "https://github.com/marshmallow-code/webargs/pull/373",
"type": "WEB"
},
{
"url": "https://github.com/marshmallow-code/webargs/commit/716bd8d1f24c84aaf99170efaa17d1d34206f6c0",
"type": "WEB"
},
{
"url": "https://github.com/marshmallow-code/webargs",
"type": "PACKAGE"
},
{
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/webargs/PYSEC-2019-139.yaml",
"type": "WEB"
},
{
"url": "https://webargs.readthedocs.io/en/latest/changelog.html",
"type": "WEB"
},
{
"url": "https://webargs.readthedocs.io/en/latest/changelog.html#id24",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": null,
"github_reviewed_at": "2020-06-16T21:24:21Z"
}
}