vulnerability Next.js Patches Critical AVIF and Windows Flaws Enabling Unauthenticated RCE Next.js has released security patches to address two critical vulnerabilities. The first, a Windows path traversal flaw, allows unauthenticated remote code execution when processing specially crafted AVIF images. The second, a heap buffer overflow in the libheif C library used for AVIF image optimization, also leads to… The Hacker News · 3d ago High CVE-2026-75604avifrcelibheif