{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90862","assignerOrgId":"f9fea0b6-671e-4eea-8fde-31911902ae05","state":"PUBLISHED","assignerShortName":"ProgressSoftware","dateReserved":"2026-09-14T06:09:55.847Z","datePublished":"2026-10-29T15:48:42.885Z","dateUpdated":"2026-10-29T15:48:42.885Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f9fea0b6-671e-4eea-8fde-31911902ae05","shortName":"ProgressSoftware","dateUpdated":"2026-10-29T15:48:42.885Z"},"title":"Web Transfer Module Multi-Factor Authentication Bypass in Progress WS_FTP Server","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-287","description":"CWE-287: Improper Authentication","type":"CWE"},{"lang":"en","cweId":"CWE-308","description":"CWE-308: Use of Single-factor Authentication","type":"CWE"}]}],"impacts":[{"descriptions":[{"lang":"en","value":"Authentication Abuse - allows file downloads from a pending multi-factor authentication session"}]}],"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 authentication in the Web Transfer Module of Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow an attacker with a user’s password to access certain files associated with that account without satisfying multi-factor authentication requirements.","supportingMedia":[{"type":"text/html","base64":false,"value":"Improper authentication in the Web Transfer Module of Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow an attacker with a user’s password to access certain files associated with that account without satisfying multi-factor authentication requirements."}]}],"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":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE","baseSeverity":"MEDIUM","baseScore":4.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N"}}],"workarounds":[{"lang":"en","value":"Restrict Web Transfer Module access to trusted networks and users, and disable Web Transfer functionality if it is not required. Contact Progress Software Technical Support for guidance on available mitigations.","supportingMedia":[{"type":"text/html","base64":false,"value":"<div>Restrict Web Transfer Module access to trusted networks and users, and disable Web Transfer functionality if it is not required. Contact Progress Software Technical Support for guidance on available mitigations.</div>"}]}],"credits":[{"lang":"en","value":"Tanishq Shah (tanishqshah)","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}}}}