{ "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" } } ] } }