Insufficient Verification of Data Authenticity Affecting io.netty:netty-resolver-dns package, versions [,4.1.135.Final)[4.2.0.Final,4.2.15.Final)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-IONETTY-17261020
- published9 Jun 2026
- disclosed8 Jun 2026
- creditVioleta Georgieva
Introduced: 8 Jun 2026
CVE-2026-47691 (opens in a new tab)How to fix?
Upgrade io.netty:netty-resolver-dns to version 4.1.135.Final, 4.2.15.Final or higher.
Overview
Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity in the DnsResolveContext.AuthoritativeNameServerList#add function. An attacker can inject malicious NS and A records into the DNS cache by controlling an authoritative name server for a subdomain and providing NS records that claim authority over a parent domain, leading to unauthorized redirection or interception of DNS queries for affected domains.