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CVE-2026-33128

h3 has a Server-Sent Events Injection via Unsanitized Newlines in Event Stream Fields

概要

h3 has a Server-Sent Events Injection via Unsanitized Newlines in Event Stream Fields

原文の説明

取得元が公開している説明をそのまま載せています (多くは英語)。

H3 is a minimal H(TTP) framework. In versions prior to 1.15.6 and between 2.0.0 through 2.0.1-rc.14, createEventStream is vulnerable to Server-Sent Events (SSE) injection due to missing newline sanitization in formatEventStreamMessage() and formatEventStreamComment(). An attacker who controls any part of an SSE message field (id, event, data, or comment) can inject arbitrary SSE events to connected clients. This issue is fixed in versions 1.15.6 and 2.0.1-rc.15.

出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

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