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Fencer Vulns
high 7.5

CVE-2026-62380 json

Netty before 4.2.16.Final SOCKS Proxy Null Byte Injection

published 2026-08-22 2 mo ago modified 2026-10-14 25 d ago also EUVD-2026-64272

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

Netty (io.netty:netty-codec-socks) versions 4.2.0.Final through 4.2.16.Final and 4.1.x through 4.1.136.Final contain null byte, CRLF, and credential injection vulnerabilities in the SOCKS4 (Socks4ClientEncoder) and SOCKS5 (Socks5ClientEncoder) client encoders, which fail to validate domain address and authentication (username/password) fields. An attacker able to control these fields can inject null bytes or CRLF characters to truncate or alter values, potentially enabling domain spoofing, SOCKS4 userid truncation, authentication data injection, and protocol confusion. Fixed in 4.2.17.Final and 4.1.137.Final.

Patch / fix

  • netty netty 4.1.137.Final, 4.2.16.Final
  • netty-tcnative SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +8 more 2.0.84-150200.3.51.1
  • netty SLE Module for Package Hub 15 SP7 4.1.138-150200.4.56.1

suse advisories SUSE-SU-2026:4391-1

  • netty openSUSE Tumbleweed 4.1.138-1.1

opensuse advisories openSUSE-SU-2026:11882-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-62380 updated cvss 5.3

io.netty/netty-codec-socks: Netty: Null byte and CRLF injection in SOCKS client encoders can lead to domain spoofing

  • Red Hat Exploit Intelligence exploit-intelligence/agent-client-rhel9
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat OpenShift Serverless openshift-serverless-1/kn-ekb-receiver-rhel9, openshift-serverless-1/kn-ekb-dispatcher-rhel9, openshift-serverless-1/kn-eventing-integrations-log-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-sns-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-sqs-sink-rhel9, +4 more Red Hat AMQ Broker 7 netty-codec-socks 4.1.137.Final-redhat-00001 Red Hat build of Apache Camel 4 for Quarkus 3 netty-codec-socks 4.1.137.Final-redhat-00001 Red Hat build of Apache Camel for Spring Boot 4 netty-codec-socks 4.1.137.Final-redhat-00001
    affected: workaround, no fix available “Fix deferred”
  • Red Hat build of Apicurio Registry 3 netty-codec-socks 4.1.137.Final-redhat-00001
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat build of Debezium 3 netty-codec-socks 4.1.137.Final-redhat-00001
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Build of Keycloak rhbk/keycloak-rhel9, keycloak/rhbk-rhel9-operator, rhbk/keycloak-rhel9-operator, keycloak/rhbk-openshift-rhel9, netty-codec-socks 4.1.137.Final-redhat-00001
    affected: workaround, no fix available, no fix planned “Out of support scope”
  • Red Hat build of Quarkus netty-codec-socks 4.1.137.Final-redhat-00001 Red Hat Enterprise Linux AI (RHEL AI) 3 bazel7 7.7.1-1.el9ai, bazel8 8.6.0-1.el9ai
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Fuse 7 netty-codec-socks 4.1.137.Final-redhat-00001 Red Hat JBoss Enterprise Application Platform 7 netty-codec-socks 4.1.137.Final-redhat-00001, jboss-eap-7/eap74-els-openjdk8-openshift-rhel8, jboss-eap-7/eap74-els-openjdk11-openshift-rhel8, jboss-eap-7/eap74-els-openjdk17-openshift-rhel8
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat JBoss Enterprise Application Platform 8 netty-codec-socks 4.1.137.Final-redhat-00001 Red Hat JBoss Enterprise Application Platform Expansion Pack netty-codec-socks 4.1.137.Final-redhat-00001 Red Hat OpenShift AI (RHOAI) rhoai/odh-modelmesh-rhel9, rhoai/odh-spark-operator-rhel9, rhoai/odh-trustyai-service-rhel9, rhoai/odh-th-torch-cpu-py312-rhel9, rhoai/odh-th-torch-cuda-py312-rhel9, rhoai/odh-th06-cpu-torch210-py312-rhel9, +4 more Red Hat OpenShift Dev Spaces devspaces/server-rhel9, devspaces/openvsx-rhel9, devspaces/pluginregistry-rhel9, devspaces/multicluster-redirector-rhel9 Red Hat Satellite 6 candlepin, candlepin-selinux
    affected: workaround, no fix available “Fix deferred”
show 1 more
  • Red Hat Single Sign-On 7 netty-codec-socks 4.1.137.Final-redhat-00001
    affected: workaround, no fix planned “Out of support scope”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
CNA 4.0 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

  • netty netty

Classification

Weakness
  • CWE-626 Null Byte Interaction Error (Poison Null Byte)

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.