{"schema":"threatline.record/2","record":{"id":"CVE-2026-92389","aliases":[],"summary":"TFTP direction confusion","details":"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.","categories":["Libraries & packages"],"product":"curl","vendor":"curl","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-92389","source_modified_at":"2026-10-20T20:21:45.378Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"curl","vendor":"curl","versions":[{"version":"8.22.0","status":"affected","lessThanOrEqual":"8.22.0","versionType":"semver"},{"version":"8.21.0","status":"affected","lessThanOrEqual":"8.21.0","versionType":"semver"},{"version":"8.20.0","status":"affected","lessThanOrEqual":"8.20.0","versionType":"semver"},{"version":"8.19.0","status":"affected","lessThanOrEqual":"8.19.0","versionType":"semver"},{"version":"8.18.0","status":"affected","lessThanOrEqual":"8.18.0","versionType":"semver"},{"version":"8.17.0","status":"affected","lessThanOrEqual":"8.17.0","versionType":"semver"},{"version":"8.16.0","status":"affected","lessThanOrEqual":"8.16.0","versionType":"semver"},{"version":"8.15.0","status":"affected","lessThanOrEqual":"8.15.0","versionType":"semver"},{"version":"8.14.1","status":"affected","lessThanOrEqual":"8.14.1","versionType":"semver"},{"version":"8.14.0","status":"affected","lessThanOrEqual":"8.14.0","versionType":"semver"},{"version":"8.13.0","status":"affected","lessThanOrEqual":"8.13.0","versionType":"semver"},{"version":"8.12.1","status":"affected","lessThanOrEqual":"8.12.1","versionType":"semver"},{"version":"8.12.0","status":"affected","lessThanOrEqual":"8.12.0","versionType":"semver"},{"version":"8.11.1","status":"affected","lessThanOrEqual":"8.11.1","versionType":"semver"},{"version":"8.11.0","status":"affected","lessThanOrEqual":"8.11.0","versionType":"semver"},{"version":"8.10.1","status":"affected","lessThanOrEqual":"8.10.1","versionType":"semver"},{"version":"8.10.0","status":"affected","lessThanOrEqual":"8.10.0","versionType":"semver"},{"version":"8.9.1","status":"affected","lessThanOrEqual":"8.9.1","versionType":"semver"},{"version":"8.9.0","status":"affected","lessThanOrEqual":"8.9.0","versionType":"semver"},{"version":"8.8.0","status":"affected","lessThanOrEqual":"8.8.0","versionType":"semver"},{"version":"8.7.1","status":"affected","lessThanOrEqual":"8.7.1","versionType":"semver"},{"version":"8.7.0","status":"affected","lessThanOrEqual":"8.7.0","versionType":"semver"},{"version":"8.6.0","status":"affected","lessThanOrEqual":"8.6.0","versionType":"semver"},{"version":"8.5.0","status":"affected","lessThanOrEqual":"8.5.0","versionType":"semver"},{"version":"8.4.0","status":"affected","lessThanOrEqual":"8.4.0","versionType":"semver"},{"version":"8.3.0","status":"affected","lessThanOrEqual":"8.3.0","versionType":"semver"},{"version":"8.2.1","status":"affected","lessThanOrEqual":"8.2.1","versionType":"semver"},{"version":"8.2.0","status":"affected","lessThanOrEqual":"8.2.0","versionType":"semver"},{"version":"8.1.2","status":"affected","lessThanOrEqual":"8.1.2","versionType":"semver"},{"version":"8.1.1","status":"affected","lessThanOrEqual":"8.1.1","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00291,"percentile":0.20514,"score_date":"2026-10-23"},"published_at":"2026-10-20T20:21:45.378Z","modified_at":"2026-10-20T20:21:45.378Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-92389","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-20T20:21:45.378Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-92389","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://curl.se/docs/CVE-2026-92389.json"},{"source":"CVE List","url":"https://curl.se/docs/CVE-2026-92389.html"},{"source":"CVE List","url":"https://hackerone.com/reports/4022568"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-20T20:21:45.378Z","content_hash":"ecb7e4609601fd404507bccfae87dc1e88c29465b926ad78f178f1cb4fe6e3c2"}}