Echo: Decompress permits unbounded gzip expansion in v4

影響: go:github.com/labstack/echo/v4 >= 4.0.0, < 4.16.1 → 4.16.1

Echo v4's opt-in Decompress middleware exposed a gzip-decoded request stream without limiting its expanded size. A small compressed request could therefore produce a very large decoded body. Handlers that read or bind that body could consume excessive memory or CPU, and repeated or concurrent requests could cause denial of service. The middleware is not enabled by default. A limit on the compressed request size alone does not bound the decompressed size. Applications that already apply an effec…

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2026/10/24 05:49、GitHub Advisory Databaseが「Echo: Decompress permits unbounded gzip expansion in v4」を公開しました (種別: 脆弱性アドバイザリ)。重大度は「重要」(high) です。関連する技術: Go、GitHub。