CVE-2019-20444 - CVE House
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Status published Critical CVE-2019-20444

HttpObjectDecoder.java in Netty before 4.1.44 allows an HTTP header that...

Vulnerability Description

HttpObjectDecoder.java in Netty before 4.1.44 allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an "invalid fold."

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

netty, debian linux, fedora, ubuntu linux, jboss amq clients, jboss enterprise application platform
Vulnerable Versions:
0, 8.0, 9.0, 10.0, 33, 18.04, 2, 7.2, 7.3

Timeline

Official Publish: January 29th, 2020
Last Modified: July 1st, 2025
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.