CVE-2026-86146
この脆弱性で確認すること
- 対象製品
- 製品名未記録
- WATRIXで確認できる範囲
- 利用製品・バージョン・設定を確認し、影響調査や対策の進め方をご相談いただけます。掲載だけで自動診断や復旧の対応を保証するものではありません。
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- 収集した原典情報
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同じCVEの情報を、出典ごとに確認
同じCVEでも、深刻度の評価や掲載状態は出典ごとに異なる場合があります。各出典の記録を残し、片方の棄却・撤回だけで他の告知の状態を書き換えません。
- 掲載中
この出典のCVSS：7.5
- 公表：
- 2026/10/21 22:20
- 更新：
- 2026/10/31 0:16
- 当サイトの取得：
- 2026/11/01 9:22
- 掲載中
この出典のCVSS：未記録
- 公表：
- 2026/10/21 21:15
- 更新：
- 2026/10/30 23:40
- 当サイトの取得：
- 2026/11/01 10:10
- CVSS
- 7.5
- 公開元の公表日時
- 2026/10/21 22:20
- 公開元の更新日時
- 2026/10/31 0:16
- 当サイトの収集処理
- 2026/11/01 9:22
原典の説明
公開元の記載です。日本語での確認手順・対処の解説が付いていない項目も含まれます。
Inconsistent interpretation of HTTP requests (HTTP request/response smuggling) in the bundled HTTP/1.1 parser of Apache bRPC (version < 1.18.0) on all platforms allows remote attackers to smuggle requests and inject headers when bRPC is deployed behind a proxy or load balancer that parses the same …
Inconsistent interpretation of HTTP requests (HTTP request/response smuggling) in the bundled HTTP/1.1 parser of Apache bRPC (version < 1.18.0) on all platforms allows remote attackers to smuggle requests and inject headers when bRPC is deployed behind a proxy or load balancer that parses the same bytes differently. Root Cause: The bRPC fork of http-parser accepts and acts on several HTTP/1.1 header forms that a conforming front-end either rejects or interprets differently, so the framing or the header set of a message can differ between the front-end and bRPC: 1. A space before the colon of framing headers (e.g. Content-Length : 5) is accepted; the value still drives bRPC's framing while the reported field name contains the trailing space. 2. Interior spaces inside a Content-Length value (e.g. Content-Length: 1 3) are skipped, so bRPC reads 13 where a front-end reads 1 or rejects the message (same class as CVE-2022-32213 in Node.js). 3. Obsolete line folding (obs-fold, RFC 7230 3.2.4) of Content-Length and Transfer-Encoding values is accepted, so a folded framing value drives bRPC's framing while a front-end that does not unfold sees a different message. 4. Chunked trailer fields are fed to the same header callbacks as the header section and are merged into the header map like real headers. A front-end only inspects the header section, so any chunked request can smuggle fields such as Authorization or X-Forwarded-For past it. 5. Transfer-Encoding lists with optional whitespace after a comma (e.g. Transfer-Encoding: gzip, chunked) are not recognized as chunked: such requests are rejected, and responses are read until connection close instead of as chunked, causing response desync. Affected Scenarios: bRPC server or client communicating over HTTP/1.1 with a front proxy, load balancer, or any peer that parses the message independently. An attacker able to send requests through the front-end can desynchronize the two parsers to smuggle requests, forge headers (e.g. Authorization, X-Forwarded-For) via chunked trailers, or desynchronize responses. How to Fix: (Choose one of the following options) 1. Upgrade bRPC to version 1.18.0, which fixes this issue. 2. Apply this patch: https://github.com/apache/brpc/pull/3521 Note: After applying the fix, the four header forms above are rejected by default and chunked trailers are dropped instead of merged into the header map. Two gflags are provided for compatibility: http_allow_obs_fold=true restores acceptance of folded Content-Length/Transfer-Encoding values, and http_strict_header_token=true additionally rejects spaces inside any header field name (not only the ones that decide framing). Legitimate clients that do not use these obsolete forms are unaffected.
出典・著作権・ライセンスを確認する
- 出典
National Vulnerability Database (NVD)
- 著作権表示
This product uses the NVD API but is not endorsed or certified by the NVD.
- 公開時の確認事項
当サイトでの保存履歴
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初回保存のみです。訂正前の版はまだありません。
現在の保存内容2026/11/01 9:22
掲載中修正状況不明
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