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    <title>Most recent entries from all</title>
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    <lastBuildDate>Wed, 07 Oct 2026 19:12:40 +0000</lastBuildDate>
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      <title>CVE-2026-21435 — webtransport-go CloseWithError can block indefinitely</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-21435</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; quic-go webtransport-go&lt;/p&gt;
&lt;p&gt;webtransport-go is an implementation of the WebTransport protocol. Prior to v0.10.0, an attacker can cause a denial of service in webtransport-go by preventing or indefinitely delaying WebTransport session closure. A malicious peer can withhold QUIC flow control credit on the CONNECT stream, blocking transmission of the WT_CLOSE_SESSION capsule and causing the close operation to hang. This vulnerability is fixed in v0.10.0.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; quic-go webtransport-go&lt;/p&gt;
&lt;p&gt;webtransport-go is an implementation of the WebTransport protocol. Prior to v0.10.0, an attacker can cause a denial of service in webtransport-go by preventing or indefinitely delaying WebTransport session closure. A malicious peer can withhold QUIC flow control credit on the CONNECT stream, blocking transmission of the WT_CLOSE_SESSION capsule and causing the close operation to hang. This vulnerability is fixed in v0.10.0.&lt;/p&gt;</content:encoded>
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