tag
Active-Storage
CVE-2026-66066
web
CRITICAL 9.5
Rails Active Storage Arbitrary File Read to RCE via libvips Unfuzzed Loaders (CVE-2026-66066)
Rails Active Storage hands untrusted, attacker-supplied image uploads directly to libvips for variant/representation generation without disabling libvips' "unfuzzed" (i.e. not hardened against malicious input) loaders, specifically the MATLAB/HDF5 matload…
Patched
2026-07-27