RHLW-2026-70779BC964A31A7E Lightwell Security Advisory: netty-resolver-dns 4.1.100.Final-rhlw-00001

Red Hat Lightwell has released io.netty:netty-resolver-dns 4.1.100.Final-rhlw-00001 with backported fixes for CVE-2026-45673, CVE-2026-45674, and CVE-2026-47691. CVE-2026-45673: Netty: DNS Cache Poisoning due to Predictable PRNG and Default Static Source Port CVE-2026-45674: Netty Vulnerable to D...

Netty's DnsResolveContext fails to validate the origin (bailiwick) of CNAME records in DNS responses

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 fails to validate the origin bailiwick of CNAME records in DNS responses. Versions 4.1.135.Final and 4.2.15.Final patch the issue...

USN-8742-1: Netty vulnerability

It was discovered that Netty incorrectly validates the bailiwick of NS records. An attacker could possibly use this issue to facilitate DNS cache poisoning attacks...

USN-8742-1 netty vulnerability

It was discovered that Netty incorrectly validates the bailiwick of NS records. An attacker could possibly use this issue to facilitate DNS cache poisoning attacks...

PT-2026-89731

It was discovered that Netty incorrectly validates the bailiwick of NS records. An attacker could possibly use this issue to facilitate DNS cache poisoning attacks...

Ubuntu 24.04 LTS : Netty vulnerability (USN-8742-1)

The remote Ubuntu 24.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-8742-1 advisory. It was discovered that Netty incorrectly validates the bailiwick of NS records. An attacker could possibly use this issue to facilitate DNS cache poisoning attack...

MITM (Man-in-the-Middle) Netty Dependency in Confluence Data Center

This is a vulnerability in a non-Atlassian Confluence dependency. Atlassian's application of this dependency presents a lower, non-critical assessed risk. This High severity MITM Man-in-the-Middle vulnerability known as CVE-2026-45674 was introduced in versions 7.4.0, 7.13.0, 7.19.0, 8.5.0, 8.9.0...

netty-resolver-dns: Netty: Information disclosure and data manipulation due to improper CNAME record validation

A flaw was found in Netty's DnsResolveContext. This vulnerability allows a remote attacker to achieve information disclosure or data manipulation by crafting malicious DNS responses. The flaw occurs because the DnsResolveContext fails to validate the origin bailiwick of CNAME records in DNS...

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

A flaw was found in Netty's DnsResolveContext. An attacker controlling an authoritative name server for a subdomain can exploit this vulnerability by providing crafted NS records that are insufficiently validated. This allows the attacker to poison the DNS cache for parent domains, bypassing...

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

A flaw was found in Netty's DnsResolveContext. An attacker controlling an authoritative name server for a subdomain can exploit this vulnerability by providing crafted NS records that are insufficiently validated. This allows the attacker to poison the DNS cache for parent domains, bypassing...

netty-resolver-dns: Netty: Information disclosure and data manipulation due to improper CNAME record validation

A flaw was found in Netty's DnsResolveContext. This vulnerability allows a remote attacker to achieve information disclosure or data manipulation by crafting malicious DNS responses. The flaw occurs because the DnsResolveContext fails to validate the origin bailiwick of CNAME records in DNS...

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

A flaw was found in Netty's DnsResolveContext. An attacker controlling an authoritative name server for a subdomain can exploit this vulnerability by providing crafted NS records that are insufficiently validated. This allows the attacker to poison the DNS cache for parent domains, bypassing...

netty-resolver-dns: Netty: Information disclosure and data manipulation due to improper CNAME record validation

A flaw was found in Netty's DnsResolveContext. This vulnerability allows a remote attacker to achieve information disclosure or data manipulation by crafting malicious DNS responses. The flaw occurs because the DnsResolveContext fails to validate the origin bailiwick of CNAME records in DNS...

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

A flaw was found in Netty's DnsResolveContext. An attacker controlling an authoritative name server for a subdomain can exploit this vulnerability by providing crafted NS records that are insufficiently validated. This allows the attacker to poison the DNS cache for parent domains, bypassing...

Security Bulletin:Vulnerability in Netty affects IBM Netezza Appliance

Summary The Netty package is used by IBM Netezza Appliance. IBM Netezza Appliance has addressed the applicable CVEsCVE-2026-45673, CVE-2026-45674, CVE-2026-47691 Vulnerability Details CVEID:CVE-2026-45673 DESCRIPTION: Netty is a network application framework for development of protocol servers an...

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

A flaw was found in Netty's DnsResolveContext. An attacker controlling an authoritative name server for a subdomain can exploit this vulnerability by providing crafted NS records that are insufficiently validated. This allows the attacker to poison the DNS cache for parent domains, bypassing...

netty-resolver-dns: Netty: Information disclosure and data manipulation due to improper CNAME record validation

A flaw was found in Netty's DnsResolveContext. This vulnerability allows a remote attacker to achieve information disclosure or data manipulation by crafting malicious DNS responses. The flaw occurs because the DnsResolveContext fails to validate the origin bailiwick of CNAME records in DNS...

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

A flaw was found in Netty's DnsResolveContext. An attacker controlling an authoritative name server for a subdomain can exploit this vulnerability by providing crafted NS records that are insufficiently validated. This allows the attacker to poison the DNS cache for parent domains, bypassing...

CVE-2026-50251

This entry describes a vulnerability in NLnet Labs Unbound (≤ 1.25.1) where enabling unwanted-reply-threshold (>0) allows a malicious delegation returning in-bailiwick glue 0.0.0.0/::0 to cause repeated, seemingly unwanted replies. The mismatch between 0.0.0.0/::0 and the local 127.0.0.1 persp...

CVE-2026-50251

In NLnet Labs Unbound up to and including version 1.25.1, when 'unwanted-reply-threshold' is enabled set to any value greater than zero, glue records of 0.0.0.0/::0 can short-circuit Unbound, on systems that can direct such traffic, by issuing DNS queries and receiving seemingly unwanted replies...