ALPINE-CVE-2026-92389

ALPINE-CVE-2026-92389

This page contains facts from public vulnerability sources. Check the original advisory before updating.

libcurl's TFTP state machine fails to validate state transitions against the requested transfer direction, accepting opening server responses for both reads and writes interchangeably. A malicious TFTP server can respond to a download request in a way that forces the client into transmit mode, prompting libcurl to consume and transmit data from the handle's persistent `CURLOPT_READDATA` pointer - including data remaining from unrelated prior operations, such as an HTTP POST request executed on a reused handle.

Fix available

Published

2026-10-20T21:17:21.457Z

Updated

2026-10-25T16:30:04.533932038Z

Stack: system

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