{"id":"CVE-2026-116844","revision":"4b47c65601c64bf9a228fbdb3432340b","records":[{"revision":"4b47c65601c64bf9a228fbdb3432340b","observedAt":"2026-10-27T15:44:06.157+00:00","statement":{"source":"cve-program","id":"CVE-2026-116844","aliases":[],"title":"Fclairamb ftpserverlib through 0.32.4 Cleartext FTPES Data Transfer via PROT P","description":"Fclairamb ftpserverlib through 0.32.4 contains a cleartext transmission vulnerability because TransferOpen checks only the transferTLS flag set by PROT, not whether the prepared data connection uses TLS. When a client sends PROT P after PASV or PORT, file contents and directory listings cross the network unencrypted, even with mandatory encryption, letting on-path attackers read or modify them.","state":0,"publishedAt":"2026-10-27T00:34:02.373+00:00","modifiedAt":"2026-10-27T14:13:59.638+00:00","affected":[{"ecosystem":"Vendor product","name":"ftpserverlib","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"fclairamb\",\n                    \"product\": \"ftpserverlib\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:golang/github.com/fclairamb/ftpserverlib\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThanOrEqual\": \"0.32.4\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.3,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","score":4.8,"severity":"MEDIUM"}],"references":["https://github.com/fclairamb/ftpserverlib/pull/685","https://github.com/fclairamb/ftpserverlib/blob/v0.32.4/handle_misc.go#L29-L31","https://github.com/fclairamb/ftpserverlib/blob/v0.32.4/client_handler.go#L720","https://www.vulncheck.com/advisories/fclairamb-ftpserverlib-through-0.32.4-cleartext-ftpes-data-transfer-via-prot-p"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116844","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-116844","identifiers":["CVE-2026-116844"]},"retained":false,"historicalAffected":[]}],"coverage":[]}