| タイトル | Envoy >= 1.33.0 Injection (CWE-74) |
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| 説明 | The header_mutation filter's query_parameter_mutations feature inserts values from formatters (such as %REQ(header)%) into query strings without URL encoding. Attacker-controlled header values containing & or = characters inject arbitrary query parameters. For example, a header value of legit&admin=true results in two query parameters instead of one. Other Envoy filters (OAuth2, gRPC transcoder) correctly use PercentEncoding::urlEncode() for this same operation. Root cause at header_mutation.cc:22 (params.add() without encoding) and utility.cc:1156 (toString() outputs raw values). Fix adds URL encoding controlled by runtime guard envoy.reloadable_features.header_mutation_url_encode_query_params.
https://github.com/envoyproxy/envoy/pull/43502 (merged 2026-02-18). Vendor contacted, acknowledged, and fixed. No CVE assigned. Not submitted to another CNA. |
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| ソース | ⚠️ https://github.com/envoyproxy/envoy/pull/43502 |
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| ユーザー | lukefr09 (UID 97110) |
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| 送信 | 2026年04月04日 22:31 (23 日 ago) |
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| モデレーション | 2026年04月24日 21:49 (20 days later) |
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| ステータス | 承諾済み |
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| VulDBエントリ | 359546 [Envoy 迄 1.33.0 Query Parameter header_mutation.cc params.add 特権昇格] |
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| ポイント | 20 |
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