{"id":"CVE-2026-117469","state":"PUBLISHED","title":"File-transfer type confusion permits unauthorized repository writes in Psono Server","description":"Psono Server (CE & EE) versions 1.0.0 through 7.2.3 did not enforce the direction of file-transfer credentials on file-repository operations. An authenticated remote attacker with read-only access to a file could present a download transfer to the upload endpoint, obtain a signed upload URL for an attacker-selected object key, and append a chunk to the owner's file. Exploitation could upload or overwrite repository objects and consume storage, subject to transfer size, chunk-count, and lifetime limits.","publishedAt":"2026-10-27T05:52:24.709Z","updatedAt":"2026-10-27T05:52:24.709Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","source":"esaqa"},"assigner":"esaqa","products":["esaqa GmbH Psono"],"affected":[{"vendor":"esaqa GmbH","product":"Psono","defaultStatus":"unaffected","versions":[{"version":"1.0.0","status":"affected","lessThan":"7.2.4","versionType":"semver"}],"repo":"https://gitlab.com/esaqa/psono/psono-server","modules":["Psono Server Community Edition","Psono Server Enterprise Edition"],"programFiles":["psono/restapi/serializers/file_repository_upload.py","psono/restapi/serializers/file_repository_download.py"]}],"references":["https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117469.md","https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/serializers/file_repository_upload.py","https://gitlab.com/esaqa/psono/psono-server/-/commit/64753b19bd8d03cfbed20db575f4dccb220d9ca4","https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4","https://gitlab.com/esaqa/psono/psono-server"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/117xxx/CVE-2026-117469.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-117469","state":"PUBLISHED","datePublished":"2026-10-27T05:52:24.709Z","dateUpdated":"2026-10-27T05:52:24.709Z","assignerShortName":"esaqa","assignerOrgId":"fdf66990-8419-4c8c-8848-ec15d75773b4","dateReserved":"2026-10-27T05:33:18.001Z"},"containers":{"cna":{"title":"File-transfer type confusion permits unauthorized repository writes in Psono Server","descriptions":[{"lang":"en","value":"Psono Server (CE & EE) versions 1.0.0 through 7.2.3 did not enforce the direction of file-transfer credentials on file-repository operations. An authenticated remote attacker with read-only access to a file could present a download transfer to the upload endpoint, obtain a signed upload URL for an attacker-selected object key, and append a chunk to the owner's file. Exploitation could upload or overwrite repository objects and consume storage, subject to transfer size, chunk-count, and lifetime limits."}],"affected":[{"vendor":"esaqa GmbH","product":"Psono","defaultStatus":"unaffected","versions":[{"version":"1.0.0","status":"affected","lessThan":"7.2.4","versionType":"semver"}],"repo":"https://gitlab.com/esaqa/psono/psono-server","modules":["Psono Server Community Edition","Psono Server Enterprise Edition"],"programFiles":["psono/restapi/serializers/file_repository_upload.py","psono/restapi/serializers/file_repository_download.py"]}],"references":[{"url":"https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117469.md","name":"Vendor security advisory for CVE-2026-117469","tags":["vendor-advisory"]},{"url":"https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/serializers/file_repository_upload.py","tags":["technical-description"]},{"url":"https://gitlab.com/esaqa/psono/psono-server/-/commit/64753b19bd8d03cfbed20db575f4dccb220d9ca4","tags":["patch"]},{"url":"https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4","tags":["release-notes"]},{"url":"https://gitlab.com/esaqa/psono/psono-server","tags":["product"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"LOW","baseSeverity":"MEDIUM","baseScore":5.4,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862 Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"esaqa","orgId":"fdf66990-8419-4c8c-8848-ec15d75773b4","dateUpdated":"2026-10-27T05:52:24.709Z"},"datePublic":"2026-10-27T00:00:00.000Z","impacts":[{"descriptions":[{"lang":"en","value":"A user with read-only file access could upload objects and append chunks in the file owner's external repository, affecting storage integrity and availability."}]}],"solutions":[{"lang":"en","value":"Upgrade to Psono Server 7.2.4 or later.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Upgrade to Psono Server 7.2.4 or later.</p>"}]}],"timeline":[{"time":"2026-07-29T16:10:00.000Z","lang":"en","value":"Vulnerability reported to vendor"},{"time":"2026-07-30T07:32:00.000Z","lang":"en","value":"Vendor fix implemented"},{"time":"2026-07-30T13:16:00.000Z","lang":"en","value":"Psono Server CE & EE 7.2.4 released"}],"credits":[{"lang":"en","value":"Ryan Chaplin","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.5"}}}}}