cvedb.io
CVE-2026-66729
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-07-27T17:16:42.517 · Last modified 2026-07-27T18:17:02.433

Summary

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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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.