GHSA-g2qx-6r8w-37pxHighCVSS 7.5
facil.io 0.6.0 through 0.7.6 contains an integer underflow vulnerability in the multipart MIME...
🔗 CVE IDs covered (1)
📋 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.
🔗 References (5)
- https://nvd.nist.gov/vuln/detail/CVE-2026-66729
- https://github.com/theopaid/Out-of-Bounds-Read-in-facil.io-MIME-Parser-leads-to-Server-Crash
- https://www.vulncheck.com/advisories/facil-io-integer-underflow-dos-via-multipart-mime-body-parser
- https://tpaidakis.com/writeups/facilio-parser-dos
- https://github.com/advisories/GHSA-g2qx-6r8w-37px