Metrics
Affected Vendors & Products
Wed, 09 Sep 2026 13:30:00 +0000
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Wed, 02 Sep 2026 13:30:00 +0000
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Thu, 20 Aug 2026 13:30:00 +0000
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Thu, 13 Aug 2026 13:30:00 +0000
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Wed, 12 Aug 2026 12:30:00 +0000
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Mon, 15 Jun 2026 12:15:00 +0000
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| Weaknesses | CWE-346 | |
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| Metrics |
threat_severity
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threat_severity
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Mon, 15 Jun 2026 02:00:00 +0000
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| CPEs | cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* |
Fri, 12 Jun 2026 16:45:00 +0000
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| First Time appeared |
Netty
Netty netty |
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| Vendors & Products |
Netty
Netty netty |
Fri, 12 Jun 2026 16:30:00 +0000
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ssvc
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Fri, 12 Jun 2026 15:45:00 +0000
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| 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` 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. | |
| Title | Netty has Insufficient Bailiwick Validation for NS Records | |
| Weaknesses | CWE-345 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-06-12T14:33:16.595Z
Updated: 2026-09-09T12:04:49.937Z
Reserved: 2026-05-19T21:18:20.403Z
Link: CVE-2026-47691
Updated: 2026-09-02T12:04:27.247Z
Status : Modified
Published: 2026-06-12T16:16:30.310
Modified: 2026-09-09T13:20:19.013
Link: CVE-2026-47691