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Vulnerabilities / CVE-2026-47691

critical

CVE-2026-47691

io.netty/netty-resolver-dns: Netty has Insufficient Bailiwick Validation for NS Records

Published Modified CWE 345, 346
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
GHSA8.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Red Hat8.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by GHSA (high), Red Hat (high), Ubuntu (medium).

Description

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's `DnsResolveContext` insufficiently validates the bailiwick of NS records, enabling DNS Cache Poisoning. An attacker controlling an authoritative name server for a subdomain can poison the cache for parent domains (like `.co.uk`). In `io.netty.resolver.dns.DnsResolveContext.AuthoritativeNameServerList#add` method accepts any NS record from the AUTHORITY section as long as the record's name is a suffix of the questionName. Subsequently, the `handleWithAdditional` method caches the associated A records from the ADDITIONAL section directly into the `authoritativeDnsServerCache` under the parent domain's key. This bypasses standard bailiwick rules, where a server authoritative for a subdomain should not be trusted to provide authoritative records for its parent. The poisoned cache is then used for all future resolutions under the parent domain's key. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

Affected packages and fixed versions

SourcePackageFixed in
chainguardairbyte-server, airbyte-server-fips, akhq and 83 more2.0.0-r1 and 73 more
debian 11nettyno fix listed
debian 12nettyno fix listed
debian 13nettyno fix listed
debian 14nettyno fix listed
echonettyno fix listed
echo maven::Echo OSVio.netty:netty-resolver-dns4.1.135.Final
maven::GitHub Security Advisory Mavenio.netty:netty-resolver-dns4.2.15.Final, 4.1.135.Final
minimosapache-druid, apache-druid-fips, apache-iceberg-sink-connector and 38 more38.0.0-r0 and 24 more
rapidfort debian 12nettyno fix listed
rapidfort debian 13nettyno fix listed
ubuntu 24.04nettyno fix listed
Show all 159 entries from 13 sources
SourcePackageFixed in
chainguardairbyte-server2.0.0-r1
chainguardairbyte-server-fips2.0.0-r1
chainguardakhq0.27.1-r3
chainguardapache-hop2.18.0-r4
chainguardapache-hop-fips2.18.0-r4
chainguardapache-nifi2.9.0-r14
chainguardapache-pulsar-4.04.0.11-r0
chainguardapache-pulsar-4.14.1.3-r15
chainguardapache-pulsar-4.24.2.2-r3
chainguardapache-pulsar-fips-4.04.0.11-r2
chainguardapicurio-registry3.3.0-r3
chainguardcamunda-8.88.8.27-r1
chainguardcamunda-8.98.9.6-r1
chainguardcamunda-zeebe-8.68.6.39-r6
chainguardcamunda-zeebe-8.78.7.30-r1
chainguardcamunda-zeebe-8.88.8.26-r0
chainguardcamunda-zeebe-8.98.9.6-r1
chainguardceleborn-0.50.5.4-r26
chainguardceleborn-0.60.6.3-r8
chainguardceleborn-0.70.7.0-r4
chainguardcommercial-elasticsearch-8.198.19.17-r0
chainguardcommercial-elasticsearch-9.39.3.6-r0
chainguardcommercial-elasticsearch-9.49.4.3-r0
chainguarddruid37.0.0-r56
chainguardelasticsearch-8.198.19.16-r1
chainguardelasticsearch-9.29.2.8-r13
chainguardelasticsearch-9.39.3.7-r1
chainguardelasticsearch-9.49.4.2-r2
chainguardelasticsearch-fips-8.198.19.16-r1
chainguardelasticsearch-fips-9.39.3.7-r1
chainguardelasticsearch-fips-9.49.4.2-r3
chainguardflyway12.8.1-r4
chainguardflyway-fips12.8.1-r2
chainguardhadoop-fips-3.53.5.0-r3
chainguardhono2.7.0-r22
chainguardinfinispan-15.015.0.22-r11
chainguardinfinispan-15.115.1.7-r20
chainguardinfinispan-15.215.2.6-r19
chainguardinfinispan-16.116.1.4-r3
chainguardkafbat-ui1.5.0-r1
chainguardkafbat-ui-fips1.5.0-r6
chainguardkafka-bridge1.0.0-r6
chainguardkafka-bridge-fips1.0.0-r3
chainguardkayenta-2025.42025.4.6-r1
chainguardkayenta-2026.02026.0.4-r1
chainguardkayenta-2026.12026.1.1-r1
chainguardkayenta-fips-2025.42025.4.3-r10
chainguardkayenta-fips-2026.02026.0.4-r1
chainguardkayenta-fips-2026.12026.1.1-r1
chainguardkeycloak-26.626.6.3-r3
chainguardkeycloak-fips-26.626.6.3-r3
chainguardknative-kafka-broker-1.201.20.3-r6
chainguardknative-kafka-broker-1.211.21.4-r4
chainguardknative-kafka-broker-1.221.22.1-r4
chainguardknative-kafka-broker-fips-1.201.20.3-r6
chainguardknative-kafka-broker-fips-1.211.21.3-r10
chainguardknative-kafka-broker-fips-1.221.22.1-r4
chainguardmanagement-api-for-apache-cassandra-4.00.1.117-r3
chainguardmanagement-api-for-apache-cassandra-4.10.1.117-r2
chainguardmanagement-api-for-apache-cassandra-5.00.1.120-r0
chainguardopensearch-22.19.5-r1
chainguardopensearch-33.8.0-r3
chainguardopensearch-fips-33.7.0-r0
chainguardpinot1.5.0-r16
chainguardpinot-fips1.5.0-r11
chainguardrequest-9047-keycloak-fips-26.426.4.7-r17
chainguardrequest-9047-keycloak-fips-26.526.5.7-r6
chainguardrequest-9047-keycloak-fips-26.626.6.3-r2
chainguards3proxy3.1.0-r9
chainguards3proxy-fips3.1.0-r8
chainguardseata2.6.0-r13
chainguardselenium4.44.0-r2
chainguardsonarqube26.8.0.126808-r0
chainguardspark-4.04.0.3-r1
chainguardspark-4.14.1.2-r4
chainguardspark-fips-4.14.1.2-r3
chainguardspark-kubernetes-operator0.9.0-r1
chainguardspark-kubernetes-operator-fips0.9.0-r1
chainguardstrimzi-kafka-operator1.0.0-r7
chainguardstrimzi-kafka-operator-fips1.0.0-r3
chainguardtez0.10.5-r16
chainguardthingsboard4.3.1.2-r5
chainguardtinkerpop3.8.1-r2
chainguardtrino483-r7
chainguardwildfly40.0.0-r3
chainguardzipkin3.6.1-r10
debian 11nettyno fix listed
debian 12nettyno fix listed
debian 13nettyno fix listed
debian 14nettyno fix listed
echonettyno fix listed
echo maven::Echo OSVio.netty:netty-resolver-dns4.1.135.Final
maven::GitHub Security Advisory Mavenio.netty:netty-resolver-dns4.2.15.Final, 4.1.135.Final
minimosapache-druid38.0.0-r0
minimosapache-druid-fips38.0.0-r0
minimosapache-iceberg-sink-connector1.12.0-r0
minimosapache-iceberg-sink-connector-fips1.12.0-r0
minimosapache-nifi2.10.0-r0
minimosapache-polaris1.6.0-r0
minimosapache-polaris-fips1.6.0-r0
minimosapicurio-registry3.3.1-r0
minimosapicurio-registry-fips3.3.1-r0
minimoscamunda-8.88.8.29-r0
minimoscdc-apache-cassandra-5.02.3.9-r0
minimosconductor3.32.1-r0
minimosconductor-fips3.32.1-r0
minimosdatahub-frontend-react1.7.0-r0
minimosdatahub-frontend-react-fips1.7.0-r0
minimosdatahub-upgrade1.7.0-r0
minimosdatahub-upgrade-fips1.7.0-r0
minimoselasticsearch-8.198.19.17-r0
minimoselasticsearch-9.49.4.3-r0
minimoselasticsearch-fips-8.198.19.17-r0
minimoselasticsearch-fips-9.49.4.3-r0
minimoskeycloak26.6.3-r1
minimoskeycloak-fips26.6.3-r1
minimosknative-kafka-broker-dispatcher-loom-1.221.22.2-r0
minimosknative-kafka-broker-dispatcher-loom-fips-1.221.22.2-r0
minimosknative-kafka-broker-receiver-loom-1.211.21.4-r1
minimosknative-kafka-broker-receiver-loom-1.221.22.2-r0
minimosknative-kafka-broker-receiver-loom-fips-1.221.22.2-r0
minimoslinstor-server1.35.0-r0
minimoslinstor-server-fips1.35.0-r0
minimosopensearch-22.19.6-r0
minimosopensearch-33.7.0-r0
minimossonarqube26.8.0.126808-r0
minimosstargate2.0.51-r2
minimosstrimzi-kafka-bridge1.0.0-r1
minimosstrimzi-kafka-bridge-fips1.1.0-r0
minimosstrimzi-kafka-operator1.0.1-r3
minimosstrimzi-kafka-operator-0.450.45.2-r6
minimosstrimzi-kafka-operator-fips1.0.1-r2
minimostrino481-r2
minimostrino-fips481-r2
rapidfort debian 12nettyno fix listed
rapidfort debian 13nettyno fix listed
ubuntu 24.04nettyno fix listed
wolfiakhq0.27.1-r3
wolfiapache-nifi2.9.0-r14
wolfiapache-pulsar-4.14.1.3-r15
wolfiapache-pulsar-4.24.2.2-r3
wolfiapicurio-registry3.3.0-r3
wolficeleborn-0.60.6.3-r8
wolfidruid37.0.0-r56
wolfiflyway12.8.1-r4
wolfiinfinispan-16.116.1.4-r3
wolfikeycloak-26.626.6.3-r3
wolfimanagement-api-for-apache-cassandra-5.00.1.120-r0
wolfiopensearch-33.8.0-r3
wolfiselenium4.44.0-r2
wolfisonarqube26.8.0.126808-r0
wolfispark-4.04.0.3-r1
wolfispark-4.14.1.2-r4
wolfistrimzi-kafka-operator1.0.0-r7
wolfitez0.10.5-r16
wolfithingsboard4.3.1.2-r5
wolfitrino483-r7
wolfiwildfly40.0.0-r3
wolfizipkin3.6.1-r10

References

All 28 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.