Microsoft issues emergency .NET patches for critical Brotli flaw
Published 17 h ago1 sourceEvidence: Reported
An out-of-bounds write vulnerability in Google's Brotli decoder affects multiple ecosystems including Node.js, .NET, PowerShell, and Python packages, potentially enabling code execution. The flaw is being actively patched across vendors, indicating broad supply-chain impact. The severity and exploitation status remain unclear, but the breadth of affected platforms elevates the risk.
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Microsoft has issued emergency out-of-band patches for a critical remote code execution (RCE) vulnerability in the Brotli compression library, affecting multiple .NET versions. This flaw, tracked as Broccoli2Shell/Node2Shell/HTTP2Shell, is confirmed to allow unauthenticated attackers to execute code on vulnerable servers. The vulnerability is also confirmed to impact Node.js, PowerShell, and Python ecosystems, indicating a broad supply-chain risk.
Published 17 h ago1 sourceEvidence: Reported
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