CVE-2026-66729 | BDVDB-2026-353116 Detail

Description#

facil.io 0.6.0 through 0.7.6 contains an integer underflow vulnerability in the multipart MIME body parser that allows unauthenticated remote attackers to crash the server process by sending a crafted Content-Disposition header with an empty field name. Attackers can trigger a uint32_t wraparound in http_mime_parser.h causing an out-of-bounds memory read past the name pointer, resulting in a bus fault that crashes the handling worker with a single POST request.

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Exploit#

History#

1. Version 12026-07-27Record published in the CVE List.
2. Version 22026-07-31Most recent update recorded in the CVE List.