CVE-2026-66730 facil.io 0.6.0 - 0.7.6 Infinite Loop DoS via Multipart MIME Body Parser

facil.io 0.6.0 through 0.7.6 contains a denial-of-service vulnerability in the multipart body parser that allows an unauthenticated remote attacker to permanently freeze worker processes at 100% CPU by sending a multipart/form-data request with a partial closing boundary. The missing progress gua...

CVE-2026-66730

CVE-2026-66730 concerns facil.io versions 0.6.0–0.7.6, where the multipart body parser is vulnerable to a denial-of-service. The root cause is a missing progress guard in the parser loop: http_mime_parse can return 0 bytes consumed without setting done or error flags, causing the caller to repeat...