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Critical 9.1Published Jan 29, 2020

CVE-2019-20445HttpObjectDecoder.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.

Updated under an hour ago ()

Does this affect you?

It affects netty and 6 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
9.1 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE)
Not given
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
mitre
NVD analysis
Modified
Record last updated
Oct 8, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
netty netty
netty:netty
before 4.1.44
NVD
debian debian_linux
debian:debian_linux
8.0; 9.0; 10.0
NVD
fedoraproject fedora
fedoraproject:fedora
33
NVD
canonical ubuntu_linux
canonical:ubuntu_linux
18.04
NVD
redhat jboss_amq_clients
redhat:jboss_amq_clients
2
NVD
redhat jboss_enterprise_application_platform
redhat:jboss_enterprise_application_platform
7.2; 7.3
NVD
apache spark
apache:spark
2.4.7; 2.4.8
NVD

References

  • x-refsource-misc
  • x-refsource-misc
  • mailing-list, x-refsource-mlist
  • mailing-list, x-refsource-mlist
  • mailing-list, x-refsource-mlist
  • mailing-list, x-refsource-mlist
  • mailing-list, x-refsource-mlist
  • mailing-list, x-refsource-mlist
  • mailing-list, x-refsource-mlist
  • x-refsource-misc
  • x-refsource-misc
  • mailing-list, x-refsource-mlist
  • mailing-list, x-refsource-mlist
  • x-refsource-misc
  • x-refsource-misc
  • mailing-list, x-refsource-mlist
  • mailing-list, x-refsource-mlist
  • x-refsource-misc
  • x-refsource-misc
  • mailing-list, x-refsource-mlist
  • vendor-advisory, x-refsource-redhat
  • mailing-list, x-refsource-mlist
  • mailing-list, x-refsource-mlist
  • mailing-list, x-refsource-mlist
  • vendor-advisory, x-refsource-redhat

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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