{"id":"GHSA-8554-jxcw-454q","summary":"Webargs mishandles concurrent JSON parsing","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.","aliases":["CVE-2019-9710","PYSEC-2019-139"],"modified":"2025-08-04T21:12:40.126345Z","published":"2019-03-12T15:16:12Z","database_specific":{"github_reviewed_at":"2020-06-16T21:24:21Z","nvd_published_at":null,"cwe_ids":["CWE-362"],"severity":"HIGH","github_reviewed":true},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-9710"},{"type":"WEB","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":"PACKAGE","url":"https://github.com/marshmallow-code/webargs"},{"type":"WEB","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"}],"affected":[{"package":{"name":"webargs","ecosystem":"PyPI","purl":"pkg:pypi/webargs"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.3"}]}],"versions":["0.1.0","0.10.0","0.11.0","0.12.0","0.13.0","0.14.0","0.15.0","0.16.0","0.17.0","0.18.0","0.2.0","0.3.0","0.3.1","0.3.2","0.3.3","0.3.4","0.4.0","0.5.0","0.5.1","0.6.0","0.6.1","0.6.2","0.7.0","0.8.0","0.8.1","0.9.0","0.9.1","1.0.0","1.1.0","1.1.1","1.10.0","1.2.0","1.3.0","1.3.1","1.3.2","1.3.3","1.3.4","1.4.0","1.5.0","1.5.1","1.5.2","1.5.3","1.6.0","1.6.1","1.6.2","1.6.3","1.7.0","1.8.0","1.8.1","1.9.0","2.0.0","2.1.0","3.0.0","3.0.1","3.0.2","4.0.0","4.1.0","4.1.1","4.1.2","4.1.3","4.2.0","4.3.0","4.3.1","4.4.0","4.4.1","5.0.0","5.1.0","5.1.1","5.1.1.post0","5.1.2"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2019/03/GHSA-8554-jxcw-454q/GHSA-8554-jxcw-454q.json"}}],"schema_version":"1.9.0","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"}]}