CVE-2019-16786 is a high-severity vulnerability affecting Waitress versions up to 1.3.1, as well as products from Debian, Fedora, Oracle, and Red Hat. It stems from improper parsing of the Transfer-Encoding header, allowing an attacker to bypass expected request body size determination. This could lead to HTTP request smuggling, where a single request is interpreted as multiple requests, potentially bypassing security controls. The vulnerability has a CVSS score of 7.5 (HIGH) due to its network attack vector, low attack complexity, and high impact on integrity, with no user interaction required. There is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in the CISA KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.3.1CPE matchmatch criteria | cpe:2.3:a:agendaless:waitress:*:*:*:*:*:*:*:* | ||
1.10.0CPE matchmatch criteria | cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | ||
30CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* | ||
31CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.