CVE-2019-16869
HIGH 7.5EPSS 8.6%
Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling.
- CVSS v3.1 NVD
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS v2.0 NVD
- 5.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N - EPSS
- 8.64% chance of exploitation in the next 30 days, 95th percentile
- Published
- 2019-09-26
- Updated
- 2026-10-08
Proof-of-concept exploits (1)
Security advisories
- https://access.redhat.com/errata/RHSA-2019:3892
- https://access.redhat.com/errata/RHSA-2019:3901
- https://access.redhat.com/errata/RHSA-2020:0159
- https://access.redhat.com/errata/RHSA-2020:0160
- https://access.redhat.com/errata/RHSA-2020:0161
- https://access.redhat.com/errata/RHSA-2020:0164
- https://access.redhat.com/errata/RHSA-2020:0445
- netty/netty/issues/9571
- https://lists.debian.org/debian-lts-announce/2019/09/msg00035.html
- https://lists.debian.org/debian-lts-announce/2020/02/msg00018.html
- https://lists.debian.org/debian-lts-announce/2020/09/msg00004.html
- https://seclists.org/bugtraq/2020/Jan/6
- https://usn.ubuntu.com/4532-1
- https://www.debian.org/security/2020/dsa-4597
- advisories/GHSA-p979-4mfw-53vg