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Origin Validation Error The advisory has been revoked - it doesn't affect any version of package eap7-ironjacamar-core-api  (opens in a new tab)

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EPSS
0.37% (31st percentile)

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  • Snyk IDSNYK-RHEL9-EAP7IRONJACAMARCOREAPI-19949756
  • published19 Sept 2026
  • disclosed12 Jun 2026
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Introduced: 12 Jun 2026

CVE-2026-47691  (opens in a new tab)
CWE-346  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream eap7-ironjacamar-core-api package and not the eap7-ironjacamar-core-api package as distributed by RHEL.

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.