{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90871", "assignerOrgId": "f9fea0b6-671e-4eea-8fde-31911902ae05", "state": "PUBLISHED", "assignerShortName": "ProgressSoftware", "dateReserved": "2026-09-14T06:10:04.370Z", "datePublished": "2026-10-29T15:56:34.762Z", "dateUpdated": "2026-10-29T15:56:34.762Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f9fea0b6-671e-4eea-8fde-31911902ae05", "shortName": "ProgressSoftware", "dateUpdated": "2026-10-29T15:56:34.762Z"}, "title": "Path Traversal Leading to File Deletion in Ad Hoc Transfer and Web Transfer in Progress WS_FTP Server", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-22", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}, {"lang": "en", "cweId": "CWE-73", "description": "CWE-73: External Control of File Name or Path", "type": "CWE"}]}], "impacts": [{"descriptions": [{"lang": "en", "value": "Path Traversal - could allow file deletion outside intended directory boundaries, subject to the affected account\u2019s permissions."}]}], "affected": [{"vendor": "Progress Software", "product": "WS_FTP Server", "platforms": ["Windows"], "versions": [{"status": "affected", "version": "0", "lessThan": "2024.0.7", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "2025.0.4", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Improper limitation of a pathname to a restricted directory in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow an unauthenticated attacker to affect files outside the intended directory.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Improper limitation of a pathname to a restricted directory in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow an unauthenticated attacker to affect files outside the intended directory."}]}], "references": [{"url": "https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 5.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}}], "workarounds": [{"lang": "en", "value": "By default the affected anonymous account can only delete files it previously created; ensure it is not granted broader write/delete permissions than required on Ad Hoc Transfer and Web Transfer related directories. Contact Progress Software Technical Support for guidance on available mitigations.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<div>By default the affected anonymous account can only delete files it previously created; ensure it is not granted broader write/delete permissions than required on Ad Hoc Transfer and Web Transfer related directories. Contact Progress Software Technical Support for guidance on available mitigations.</div>"}]}], "credits": [{"lang": "en", "value": "Momen Elmady (0xmatrix)", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 0.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "platforms": ["Windows"], "product": "WS_FTP Server", "vendor": "Progress Software", "versions": [{"lessThan": "2024.0.7", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "2025.0.4", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "security@progress.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper limitation of a pathname to a restricted directory in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow an unauthenticated attacker to affect files outside the intended directory."}], "id": "CVE-2026-90871", "lastModified": "2026-10-29T16:24:53.840", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security@progress.com", "type": "Secondary"}]}, "published": "2026-10-29T16:20:05.307", "references": [{"source": "security@progress.com", "url": "https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view"}], "sourceIdentifier": "security@progress.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-73"}], "source": "security@progress.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": ["windows"], "status": "affected", "versions": {"scheme": "generic", "value": "[0,2024.0.7)"}}, {"platform": ["windows"], "status": "affected", "versions": {"scheme": "generic", "value": "[0,2025.0.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "WS_FTP Server", "source": "cna", "vendor": "Progress Software"}, "product": "ws_ftp_server", "vendor": "progress"}, {"configurations": [{"platform": ["windows"], "status": "affected", "versions": {"scheme": "generic", "value": "[0,2024.0.7)"}}, {"platform": ["windows"], "status": "affected", "versions": {"scheme": "generic", "value": "[0,2025.0.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "WS_FTP Server", "source": "cna", "vendor": "Progress Software"}, "product": "ws_ftp_server", "vendor": "progress_software"}], "created": "2026-10-29T18:00:17.796244+00:00", "updated": "2026-10-29T20:15:14.291104+00:00", "vendors": ["progress", "progress$PRODUCT$ws_ftp_server", "progress_software", "progress_software$PRODUCT$ws_ftp_server"]}