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Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-45674CRITICAL
Netty Vulnerable to DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  C  H  H  N   10.0   .0025   16.4     —
AFFECTED
  Product  Versions                          Fixed
  netty    >= 4.2.0.Final, < 4.2.15.Final –  —
TIMELINE
  May 12  Reserved by GitHub_M
  Jun 12  Published (CNA: GitHub_M)
  Aug 13  RESCORED — CVE-2026-45674 (netty). CVSS 8.7 → 10 (NVD).
CWE-345, CWE-346 · CNA: GitHub_M · CVSS v3.1 · 18 references · NVD status: Modified

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 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.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
May 12, 2026ReservedReserved by GitHub_M
June 12, 2026PublishedPublished (CNA: GitHub_M)
August 13, 2026RESCOREDRESCORED — CVE-2026-45674 (netty). CVSS 8.7 → 10 (NVD).

Affected

Affected products and packages — 1 row
VendorProduct / PackageEcosystemVersion introducedFixed
nettynetty>= 4.2.0.Final, < 4.2.15.Final

Weaknesses

CWE-345 · CWE-346

References (18)

Related

Authoritative record: CVE-2026-45674 at cve.org

Vendors: netty

Weaknesses: CWE-345 · CWE-346

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-45674 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.