{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116844","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-10-27T00:10:23.444Z","datePublished":"2026-10-27T00:34:02.373Z","dateUpdated":"2026-10-29T10:52:21.022Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-10-29T10:52:21.022Z"},"datePublic":"2026-10-23T00:00:00.000Z","title":"Fclairamb ftpserverlib through 0.32.4 Cleartext FTPES Data Transfer via PROT P","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Cleartext Transmission of Sensitive Information","cweId":"CWE-319","type":"CWE"}]}],"affected":[{"vendor":"fclairamb","product":"ftpserverlib","defaultStatus":"unaffected","packageURL":"pkg:golang/github.com/fclairamb/ftpserverlib","versions":[{"version":"0","status":"affected","versionType":"semver","lessThanOrEqual":"0.32.4"}]},{"vendor":"Syncplify, Inc.","product":"Syncplify Server!","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"8.8.0","status":"affected","versionType":"semver"}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/fclairamb/ftpserverlib/pull/685","tags":["patch","issue-tracking"]},{"url":"https://github.com/fclairamb/ftpserverlib/blob/v0.32.4/handle_misc.go#L29-L31","tags":["technical-description"]},{"url":"https://github.com/fclairamb/ftpserverlib/blob/v0.32.4/client_handler.go#L720","tags":["technical-description"]},{"name":"VulnCheck Advisory: Fclairamb ftpserverlib through 0.32.4 Cleartext FTPES Data Transfer via PROT P","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/fclairamb-ftpserverlib-through-0.32.4-cleartext-ftpes-data-transfer-via-prot-p"}],"credits":[{"lang":"en","value":"Che Agg Truvat","type":"finder"},{"lang":"en","value":"drakkan","type":"remediation developer"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-27T13:42:20.618045Z","id":"CVE-2026-116844","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-27T14:13:59.638Z"}}]}}