CVE-2020-7238

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-01-27 · updated 2026-06-17
Weakness: CWE-444

Description

Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE-2019-16869.

Affected products

Debian Linux: 8.0, 9.0, 10.0
Fedoraproject Fedora: 33
netty: 4.1.43
Red Hat JBoss EAP: 7.2, 7.3, 7.4
RedHat Jboss Enterprise Application Platform Text-Only Advisories: all versions
RedHat Openshift Application Runtimes Text-Only Advisories: all versions

References

https://access.redhat.com/errata/RHSA-2020:0497
https://access.redhat.com/errata/RHSA-2020:0567
https://access.redhat.com/errata/RHSA-2020:0601
https://access.redhat.com/errata/RHSA-2020:0605
https://access.redhat.com/errata/RHSA-2020:0606
https://access.redhat.com/errata/RHSA-2020:0804
https://access.redhat.com/errata/RHSA-2020:0805
https://access.redhat.com/errata/RHSA-2020:0806
https://access.redhat.com/errata/RHSA-2020:0811
https://github.com/jdordonezn/CVE-2020-72381/issues/1
https://lists.apache.org/thread.html/r131e572d003914843552fa45c4398b9903fb74144986e8b107c0a3a7%40%3Ccommits.cassandra.apache.org%3E
https://lists.apache.org/thread.html/rc8d554aad889d12b140d9fd7d2d6fc2e8716e9792f6f4e4b2cdc2d05%40%3Ccommits.cassandra.apache.org%3E

Get alerted when CVE-2020-7238 or the next vulnerability affects your stack