{"id":"CVE-2020-7658","aliases":["GHSA-63h2-9cc8-fc7m","PYSEC-2020-239","SNYK-PYTHON-MEINHELD-569140"],"url":"https://o3.security/vulnerability/CVE-2020-7658","summary":"meinheld vulnerable to HTTP Request Smuggling","details":"meinheld prior to 1.0.2 is vulnerable to HTTP Request Smuggling. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing.","published":"2020-05-22T16:15:10.973Z","modified":"2026-10-20T10:53:30.854353369Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"meinheld","fixedVersion":"1.0.2"}],"fix":{"url":"https://github.com/mopemope/meinheld/commit/0cfa70b2cd3800f1e4beeaef5421b156d90f0e09","label":"mopemope/meinheld@0cfa70b"},"references":[{"type":"WEB","url":"https://github.com/mopemope/meinheld/blob/master/CHANGES.rst%2C"},{"type":"FIX","url":"https://snyk.io/vuln/SNYK-PYTHON-MEINHELD-569140"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7658"},{"type":"WEB","url":"https://github.com/mopemope/meinheld/issues/111"},{"type":"WEB","url":"https://github.com/mopemope/meinheld/commit/0cfa70b2cd3800f1e4beeaef5421b156d90f0e09"},{"type":"WEB","url":"https://github.com/mopemope/meinheld/commit/3bc3e7ccd534277af955c0c92981d0aa033929a7"},{"type":"WEB","url":"https://github.com/mopemope/meinheld/commit/4155876bfd3e8fc4adad4aaa59ec3f1cefa1d2d1"},{"type":"PACKAGE","url":"https://github.com/mopemope/meinheld"},{"type":"WEB","url":"https://github.com/mopemope/meinheld/blob/master/CHANGES.rst"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/meinheld/PYSEC-2020-239.yaml"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T10:53:30.854353369Z"}}