
Brotli Decoder Flaw CVE-2026-111497 Spreads to .NET, FFmpeg, and ClickHouse
A critical out-of-bounds write vulnerability in Google’s Brotli decoder, identified as CVE-2026-111497, affects a wide range of software beyond Node.js. The flaw, which allows unauthenticated attackers to corrupt memory or execute code, has been confirmed in .NET, FFmpeg, ClickHouse, Apache Arrow, and Python packages. While Node.js and several other platforms have released patches, some distributions and applications remain unpatched, requiring immediate remediation or temporary workarounds to prevent exploitation.


