ALPINE-CVE-2019-16786
- Source
- https://security.alpinelinux.org/vuln/CVE-2019-16786
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-16786.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2019-16786
- Upstream
- Published
- 2019-12-20T23:15:11Z
- Modified
- 2026-11-03T06:32:35Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
Waitress through version 1.3.1 would parse the Transfer-Encoding header and only look for a single string value, if that value was not chunked it would fall through and use the Content-Length header instead. According to the HTTP standard Transfer-Encoding should be a comma separated list, with the inner-most encoding first, followed by any further transfer codings, ending with chunked. Requests sent with: "Transfer-Encoding: gzip, chunked" would incorrectly get ignored, and the request would use a Content-Length header instead to determine the body size of the HTTP message. This could allow for Waitress to treat a single request as multiple requests in the case of HTTP pipelining. This issue is fixed in Waitress 1.4.0.
- References