{"id":"CVE-2026-92389","published":"2026-10-20T21:17:21.457","lastModified":"2026-10-22T16:57:53.407","description":"libcurl's TFTP state machine fails to validate state transitions against the\nrequested transfer direction, accepting opening server responses for both\nreads and writes interchangeably. A malicious TFTP server can respond to a\ndownload request in a way that forces the client into transmit mode, prompting\nlibcurl to consume and transmit data from the handle's persistent\n`CURLOPT_READDATA` pointer - including data remaining from unrelated prior\noperations, such as an HTTP POST request executed on a reused handle.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://curl.se/docs/CVE-2026-92389.html","tags":[]},{"url":"https://curl.se/docs/CVE-2026-92389.json","tags":[]},{"url":"https://hackerone.com/reports/4022568","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}