Anthropic Bun vulnerabilities

Known vulnerabilities in Anthropic Bun, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

Act nowCVE-2026-1114977-zip · p7zip +367 moreOut-of-Bounds Write in Google Brotli DecoderA buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream. Users need to update any Brotli libraries or binaries between 1.0.3 through 1.2.0 to the latest available version: 1.0.10 or 1.1.1 or 1.2.1.CVSS9.8CriticalKEVEPSS87.99%