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CVE-2026-19474 is a denial-of-service vulnerability in @fastify/multipart, the multipart form-data parser for Fastify. In versions 3.0.0 through 10.1.0, the request.saveRequestFiles() code path can fail to remove temporary files when a client disconnects while multipart parsing is advancing between parts. The rejection raised by the iterator in this inter-part state falls outside the normal per-file cleanup logic, allowing a previously completed temporary file to remain on disk. This results in persistent accumulation of orphaned temporary files and represents an incomplete-fix variant of CVE-2025-24033.
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No public exploit code observed for this vulnerability.
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Cross-references every affected SKU, including bundled OEM variants.
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