{"schemaVersion":3,"id":"CVE-2026-55495","aliases":["GHSA-49h3-cwhj-4737","GO-2026-6097"],"status":"published","duplicateOf":null,"title":null,"description":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the WOPI PUT_RELATIVE handler passes X-WOPI-SuggestedTarget to URI.JoinRaw as a path rather than a filename, allowing slash and dot-dot segments to escape the source file directory and create or conditionally overwrite files elsewhere in the same owner account. This issue is fixed in version 4.17.0.","dates":{"published":"2026-07-31T02:58:14.080Z","modified":"2026-07-31T19:27:00.216Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":4.3,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":4.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Go","score":4.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","exploitability":7.2,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":4.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00376,"percentile":0.30381,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.116,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.0026},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.0026,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.0026,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.0026,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.0026,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.0026,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0026,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0026,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0026,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0026,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0026,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00376,"percentile":0.30381}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.0026,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0026,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0026,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00376,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00376,"percentile":0.30381}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","description":"The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/22.html"}],"affected":[{"vendor":"cloudreve","product":"cloudreve","name":"cloudreve","label":"cloudreve","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 4.17.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.17.0","eol":null,"hubHref":"/vendor/cloudreve/cloudreve"},{"vendor":"github.com/cloudreve","product":"Cloudreve","name":"github.com/cloudreve/Cloudreve","label":"Cloudreve","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/cloudreve/Cloudreve","purlType":"golang","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"github.com/cloudreve/Cloudreve","product":"v3","name":"github.com/cloudreve/Cloudreve/v3","label":"v3","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/cloudreve/Cloudreve/v3","purlType":"golang","versions":[{"text":"≤ 3.0.0-20250225100611-da4e44b77af4","noFixRecorded":false,"fixedIn":null},{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"≤ 3.0.0-20250225100611-da4e44b77af4 | All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"github.com/cloudreve/Cloudreve","product":"v4","name":"github.com/cloudreve/Cloudreve/v4","label":"v4","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","purlType":"golang","versions":[{"text":"< 4.0.0-20260613023150-7968e50429ef","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.0.0-20260613023150-7968e50429ef","eol":null,"hubHref":null}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-49h3-cwhj-4737","label":"github.com/cloudreve/cloudreve/security/advisories/GHSA-49h3-cwhj-4737","hostname":"github.com","tags":["X Refsource CONFIRM","WEB","Advisory"]},{"url":"https://github.com/cloudreve/cloudreve/commit/7968e50429efab40ffa8f57fecdfbd5a73d23630","label":"github.com/cloudreve/cloudreve/commit/7968e50429efab40ffa8f57fecdfbd5a73d23630","hostname":"github.com","tags":["X Refsource MISC","WEB"]},{"url":"https://github.com/cloudreve/cloudreve/releases/tag/4.17.0","label":"github.com/cloudreve/cloudreve/releases/tag/4.17.0","hostname":"github.com","tags":["X Refsource MISC","WEB"]},{"url":"https://github.com/cloudreve/cloudreve","label":"github.com/cloudreve/cloudreve","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:21761-1","SUSE-SU-2026:23625-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:21761-1","SUSE-SU-2026:23625-1"]},"timeline":[{"kind":"published","date":"2026-07-31T02:58:14.080Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-31T19:27:00.216Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":17,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T09:16:55.291Z","stale":false,"partial":false}}