← CVE Intelligence

CVE-2026-66729

facil.io 0.6.0 - 0.7.6 Integer Underflow DoS via Multipart MIME Body Parser PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
boazsegev / facil.ioaffected 0.6.0 through 0.7.6

CWE

CWE-125

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.