Developers.Cloudflare Next.js Security Release Addresses Critical Remote Code Execution Vulnerabilities
Article Content
- •Two critical vulnerabilities in Next.js allow remote code execution.
- •Vercel's managed services are not affected; self-hosted applications must upgrade.
- •Immediate action is required for Windows-hosted applications using specific routers.
Vercel disclosed two critical vulnerabilities in Next.js affecting applications using the AVIF image format and Windows servers. The first vulnerability, tracked as GHSA-2xp9-vwfh-vxw4, allows unauthenticated remote code execution via crafted AVIF inputs processed by the libheif library. The second vulnerability, CVE-2026-75604, affects Windows-hosted applications using the Pages Router and App Router without Cache Components, also enabling unauthenticated remote code execution. Vercel has patched these vulnerabilities in versions 16.3.3 and 15.5.24, and applications hosted on Vercel are not affected. Immediate upgrades are recommended for self-hosted applications, as no workarounds are available for the Windows vulnerability. The vulnerabilities were responsibly disclosed by security researchers, and Vercel has implemented protections to mitigate the risks.
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