GHSA-p2v9-g2qv-p635 · Severity: medium · Ecosystem: maven — HTTP Request Smuggling in Netty
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.
Conclusion & alert: CVE-2019-20445 is rated High Exploit Risk (82.1/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 3.56%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-10 | 3.66% | 3.56% | -0.09% |
| 2 | 2026-05-28 | 3.56% | 3.66% | +0.09% |
| 3 | 2026-05-19 | — | 3.56% | — |
Full EPSS history (37 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.1 | 3.1 | CRITICAL |
|
3.9 | 5.2 | [email protected] |
| 6.4 | 2.0 | MEDIUM |
|
10.0 | 4.9 | [email protected] |
GHSA-p2v9-g2qv-p635 · Severity: medium · Ecosystem: maven — HTTP Request Smuggling in Netty
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2019-20445 not yet assigned priority: Debian including 1 source packages (netty), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2019-20445 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2019-20445 |
suse
|
medium | — | https://www.suse.com/security/cve/CVE-2019-20445/ |
ubuntu
|
medium | CVE-2019-20445 medium priority: Ubuntu including 2 source packages (netty, netty-3.9), 33 status rows across 17 suites (bionic, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 13, not-affected 12, released 4, needs-triage 2, ignored 1, needed 1. | https://ubuntu.com/security/CVE-2019-20445 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| netty | netty | < 4.1.44 | cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| debian | debian_linux | 10.0 | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
| fedoraproject | fedora | 33 | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| redhat | jboss_amq_clients | 2 | cpe:2.3:a:redhat:jboss_amq_clients:2:*:*:*:*:*:*:* |
| redhat | jboss_enterprise_application_platform | 7.2 | cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.2:*:*:*:*:*:*:* |
| redhat | jboss_enterprise_application_platform | 7.3 | cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.3:*:*:*:*:*:*:* |
| apache | spark | 2.4.7 | cpe:2.3:a:apache:spark:2.4.7:*:*:*:*:*:*:* |
| apache | spark | 2.4.8 | cpe:2.3:a:apache:spark:2.4.8:*:*:*:*:*:*:* |