High severityNVD Advisory· Published Sep 26, 2019· Updated Jul 7, 2025
CVE-2019-16869
CVE-2019-16869
Description
Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
io.netty:netty-allMaven | >= 4.0.0.Alpha1, < 4.1.42.Final | 4.1.42.Final |
org.jboss.netty:nettyMaven | >= 0 | — |
Affected products
3- Netty/Nettydescription
- ghsa-coords2 versions
>= 4.0.0.Alpha1, < 4.1.42.Final+ 1 more
- (no CPE)range: >= 4.0.0.Alpha1, < 4.1.42.Final
- (no CPE)range: >= 0
Patches
Vulnerability mechanics
References
84- access.redhat.com/errata/RHSA-2019:3892ghsavendor-advisoryWEB
- access.redhat.com/errata/RHSA-2019:3901ghsavendor-advisoryWEB
- access.redhat.com/errata/RHSA-2020:0159ghsavendor-advisoryWEB
- access.redhat.com/errata/RHSA-2020:0160ghsavendor-advisoryWEB
- access.redhat.com/errata/RHSA-2020:0161ghsavendor-advisoryWEB
- access.redhat.com/errata/RHSA-2020:0164ghsavendor-advisoryWEB
- access.redhat.com/errata/RHSA-2020:0445ghsavendor-advisoryWEB
- github.com/advisories/GHSA-p979-4mfw-53vgghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2019-16869ghsaADVISORY
- usn.ubuntu.com/4532-1/mitrevendor-advisory
- www.debian.org/security/2020/dsa-4597ghsavendor-advisoryWEB
- github.com/netty/netty/compare/netty-4.1.41.Final...netty-4.1.42.FinalghsaWEB
- github.com/netty/netty/issues/9571ghsaWEB
- lists.apache.org/thread.html/0acadfb96176768caac79b404110df62d14d30aa9d53b6dbdb1407ac@%3Cissues.spark.apache.org%3Eghsamailing-listWEB
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- usn.ubuntu.com/4532-1ghsaWEB
- github.com/poc-effectiveness/PoCAdaptation/tree/main/Adapted/CVE-2019-16869/5.0.0.Alpha1/exploitmitre
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