{"id":"CVE-2019-16792","details":"Waitress through version 1.3.1 allows request smuggling by sending the Content-Length header twice. Waitress would header fold a double Content-Length header and due to being unable to cast the now comma separated value to an integer would set the Content-Length to 0 internally. If two Content-Length headers are sent in a single request, Waitress would treat the request as having no body, thereby treating the body of the request as a new request in HTTP pipelining. This issue is fixed in Waitress 1.4.0.","aliases":["GHSA-4ppp-gpcr-7qf6","GHSA-j7j6-7hfx-5522","PYSEC-2020-178"],"modified":"2026-04-02T01:42:39.614287Z","published":"2020-01-22T19:15:11.140Z","related":["GHSA-4ppp-gpcr-7qf6","SUSE-RU-2020:2072-1","SUSE-RU-2020:2161-1","SUSE-SU-2020:1901-1","SUSE-SU-2020:3269-1","SUSE-SU-2020:3292-1","openSUSE-SU-2020:1911-1","openSUSE-SU-2020:1922-1"],"references":[{"type":"ADVISORY","url":"https://github.com/Pylons/waitress/security/advisories/GHSA-4ppp-gpcr-7qf6"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html"},{"type":"ADVISORY","url":"https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes"},{"type":"FIX","url":"https://github.com/Pylons/waitress/commit/575994cd42e83fd772a5f7ec98b2c56751bd3f65"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pylons/waitress","events":[{"introduced":"0"},{"last_affected":"05e965e02f9d73fa6db18a120da1bebcfe429ca2"},{"fixed":"575994cd42e83fd772a5f7ec98b2c56751bd3f65"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"1.3.1"}]}}],"versions":["0.1","0.2","0.3","0.4","0.5","0.6","0.6.1","0.7","0.8","0.8.1","0.8.10","0.8.11b0","0.8.2","0.8.3","0.8.4","0.8.5","0.8.6","0.8.7","0.8.8","0.8.9","0.9.0b0","v0.9.0","v0.9.0b1","v1.0.0","v1.0.1","v1.0.2","v1.0a1","v1.0a2","v1.1.0","v1.2.0","v1.2.0b1","v1.2.0b2","v1.2.0b3","v1.2.1","v1.3.0","v1.3.0b0","v1.3.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-16792.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"1.10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}