CVE-2019-20445
HTTP Request Smuggling in Netty
9.1
CRITICAL
CVSS 3.1
EPSS 3.7%
Description
HttpObjectDecoder.java in Netty before 4.1.44 allows a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header.
How to fix CVE-2019-20445
To remediate CVE-2019-20445, upgrade the affected package to a fixed version below.
- Debian/netty—upgrade to 1:4.1.45-1 or later
- Maven/io.netty:netty—no fix listed
- —upgrade to 4.1.45 or later
- —no fix listed
Is CVE-2019-20445 being exploited?
Low — EPSS is 3.7%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 1:4.1.45-1
- from 0
- >= 4.0.0, < 4.1.45
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |