Is CVE-2020-7238 being actively exploited?

CVE-2020-7238 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2020-7238?

CVE-2020-7238 has a CVSS 3.1 base score of 7.5 (HIGH).

CVE-2020-7238

HIGH · CVSS 7.5EPSS 3.6%EU EUVD

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.

Key facts

CVSS score: 7.5 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE): CWE-444
EPSS score: 3.6% (89th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2020-0303)
Published: January 27, 2020
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2020-0303 in the EU Vulnerability Database. Last updated in EUVD on August 4, 2024.

View on the EU Vulnerability Database

Affected products

debian / debian linux
debian / debian linux
debian / debian linux
fedoraproject / fedora
netty / netty
redhat / jboss enterprise application platform
redhat / jboss enterprise application platform
redhat / jboss enterprise application platform
redhat / jboss enterprise application platform text-only advisories
redhat / openshift application runtimes text-only advisories

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

JBoss Enterprise Application Platform 7 Version 7.2.3 - Red Hat, Inc. - Common Criteria OCSI/CERT/ATS/05/2018/RC - archived

References

https://access.redhat.com/errata/RHSA-2020:0497(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2020:0567(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2020:0601(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2020:0605(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2020:0606(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2020:0804(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2020:0805(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2020:0806(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2020:0811(Third Party Advisory)
https://github.com/jdordonezn/CVE-2020-72381/issues/1(Exploit, Third Party Advisory)
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
https://lists.debian.org/debian-lts-announce/2020/02/msg00017.html(Mailing List, Third Party Advisory)
https://lists.debian.org/debian-lts-announce/2020/02/msg00018.html(Mailing List, Third Party Advisory)
https://lists.debian.org/debian-lts-announce/2020/09/msg00003.html(Mailing List, Third Party Advisory)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TS6VX7OMXPDJIU5LRGUAHRK6MENAVJ46/
https://netty.io/news/(Vendor Advisory)
https://www.debian.org/security/2021/dsa-4885(Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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