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      <title>CVE-2026-54463 — websocket-driver: Memory exhaustion via abuse of protocol length headers</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-54463</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; faye websocket-driver-ruby&lt;/p&gt;
&lt;p&gt;websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an indefinite sequence of 0x80 or higher bytes that the peer parses into an ever-growing Ruby integer. This can make a WebSocket connection consume an unbounded amount of memory and lead to the host process running out of memory. This issue is fixed in version 0.8.1.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; faye websocket-driver-ruby&lt;/p&gt;
&lt;p&gt;websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an indefinite sequence of 0x80 or higher bytes that the peer parses into an ever-growing Ruby integer. This can make a WebSocket connection consume an unbounded amount of memory and lead to the host process running out of memory. This issue is fixed in version 0.8.1.&lt;/p&gt;</content:encoded>
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