要点
- CVE-2026-59899 は io.netty:netty-codec-http, netty (netty) に影響する深刻度「高」 (CVSS 7.5) の脆弱性です。
- 今後30日間に悪用される確率（EPSS）：0.61%（全脆弱性の 49.2% より高い）。
- 対処：4.2.16.Final, 4.1.136.Final, 4.2.16, 4.1.136 以降に更新してください。
| パッケージ | 影響を受けるバージョン | 修正済みバージョン |
|---|
| io.netty:netty-codec-http Maven | ≥ 4.2.0.Final, < 4.2.16.Final< 4.1.136.Final
| 4.2.16.Final4.1.136.Final
|
| netty | ≥ 4.2.0, < 4.2.16< 4.1.136
| 4.2.164.1.136
|
概要
Impact
HttpContentEncoder (the superclass of the production handler HttpContentCompressor) maintains a per-channel ArrayDeque<CharSequence> named acceptEncodingQueue that accumulates attacker-controlled data without any size limit. The queue is filled on the I/O thread for every inbound HTTP request and drained only when the application later writes a non-1xx response. This creates a resource exhaustion vulnerability when an attacker exploits HTTP/1.1 pipelining to flood the connection with requests faster than the application produces responses.
NVD の説明
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, `HttpContentEncoder` (the superclass of the production handler `HttpContentCompressor`) maintains a per-channel `ArrayDeque<CharSequence>` named `acceptEncodingQueue` that accumulates attacker-controlled data without any size limit. The queue is filled on the I/O thread for every inbound HTTP request and drained only when the application later writes a non-1xx response. This creates a resource exhaustion vulnerability when an attacker exploits HTTP/1.1 pipelining to flood the connection with requests faster than the application produces responses. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
io.netty:netty-codec-http のその他の脆弱性
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