CVE-2026-92389

Name of the Vulnerable Software and Affected Versions libcurl versions prior to 8.23.0-1.1

Description The TFTP state machine fails to validate state transitions against the requested transfer direction, allowing opening server responses for reads and writes to be accepted interchangeably. A malicious TFTP server can respond to a download request to force the client into transmit mode. This causes libcurl to consume and transmit data from the handle's persistent CURLOPT READDATA pointer, which may include data remaining from unrelated prior operations, such as an HTTP POST request performed on a reused handle.

Recommendations Update to version 8.23.0-1.1.