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    CVE-2026-45674

    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.

    Published:Jun 12, 2026
    Last Modified:Sep 9, 2026
    EPS:Jun 12, 2026
    EPSS Score:0.00248
    CVSS Score:8.7

    Affected Products

    Vendor
    Netty
    Product
    Netty

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-111 JSON Hijacking (aka JavaScript Hijacking)
    CAPEC-141 Cache Poisoning
    CAPEC-142 DNS Cache Poisoning
    CAPEC-148 Content Spoofing
    CAPEC-160 Exploit Script-Based APIs
    CAPEC-21 Exploitation of Trusted Identifiers
    CAPEC-218 Spoofing of UDDI/ebXML Messages
    CAPEC-384 Application API Message Manipulation via Man-in-the-Middle
    CAPEC-385 Transaction or Event Tampering via Application API Manipulation
    CAPEC-386 Application API Navigation Remapping
    CAPEC-387 Navigation Remapping To Propagate Malicious Content
    CAPEC-388 Application API Button Hijacking
    CAPEC-510 SaaS User Request Forgery
    CAPEC-59 Session Credential Falsification through Prediction
    CAPEC-60 Reusing Session IDs (aka Session Replay)
    CAPEC-665 Exploitation of Thunderbolt Protection Flaws
    CAPEC-701 Browser in the Middle (BiTM)
    CAPEC-75 Manipulating Writeable Configuration Files
    CAPEC-76 Manipulating Web Input to File System Calls
    CAPEC-89 Pharming

    Related CVEs

    CVE-2026-89044 (CVSS 6.9) — Netty versions 4.1.133.Final through 4.1.137.Final and 4.2.13.Final through 4.2.17.Final fail to properly vali…
    CVE-2026-76816 (CVSS 3.5) — Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.137.Final and 4.2.…
    CVE-2026-62380 (CVSS 6.3) — 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 c…
    CVE-2026-62243 (CVSS 8.7) — Netty (io.netty:netty-handler) versions from 4.2.0.Final through 4.2.16.Final and versions through 4.1.136.Fin…
    CVE-2026-75595 (CVSS 9.1) — Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Fina and 4.2.17.Final, …
    CVE-2026-75596 (CVSS 8.7) — Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final,…
    CVE-2026-59903 (CVSS 6.5) — Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final,…
    CVE-2026-59902 (CVSS 7.5) — Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final,…
    CVE-2026-73508 (CVSS 5.3) — Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final,…
    CVE-2026-73507 (CVSS 7.5) — Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final,…

    References

    https://github.com/netty/netty/releases/tag/netty-4.1.135.Final
    https://github.com/netty/netty/releases/tag/netty-4.2.15.Final
    https://github.com/netty/netty/security/advisories/GHSA-676x-f7gg-47vc
    https://access.redhat.com/errata/RHSA-2026:26017
    https://access.redhat.com/errata/RHSA-2026:26018
    https://access.redhat.com/errata/RHSA-2026:26586
    https://access.redhat.com/errata/RHSA-2026:34608
    https://access.redhat.com/errata/RHSA-2026:37390
    https://access.redhat.com/errata/RHSA-2026:41951
    https://access.redhat.com/errata/RHSA-2026:48151
    https://access.redhat.com/errata/RHSA-2026:49700
    https://access.redhat.com/errata/RHSA-2026:49701
    https://access.redhat.com/errata/RHSA-2026:50085
    https://access.redhat.com/errata/RHSA-2026:53644
    https://access.redhat.com/errata/RHSA-2026:53806
    https://access.redhat.com/errata/RHSA-2026:54435
    https://access.redhat.com/errata/RHSA-2026:62260
    https://access.redhat.com/errata/RHSA-2026:65126
    https://access.redhat.com/security/cve/CVE-2026-45674
    https://bugzilla.redhat.com/show_bug.cgi?id=2488400
    https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45674.json

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High