{"cve":"CVE-2026-55495","nvd":{"published":"2026-07-31T04:17:22.597","modified":"2026-09-08T20:51:43.490","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","score":4.3},"cwes":["CWE-22"],"references":["https://github.com/cloudreve/cloudreve/commit/7968e50429efab40ffa8f57fecdfbd5a73d23630","https://github.com/cloudreve/cloudreve/releases/tag/4.17.0","https://github.com/cloudreve/cloudreve/security/advisories/GHSA-49h3-cwhj-4737","https://github.com/cloudreve/cloudreve/security/advisories/GHSA-49h3-cwhj-4737"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:47:10.050265369+00:00"},"epss":{"cve":"CVE-2026-55495","score":0.00376,"percentile":0.31656,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-49h3-cwhj-4737","url":"https://osv.dev/vulnerability/GHSA-49h3-cwhj-4737","summary":"Cloudreve: Path Traversal in WOPI PUT_RELATIVE Allows Arbitrary File Creation in Owner Account","modified":"2026-08-18T15:10:37.942812212Z","packages":[{"ecosystem":"Go","name":"github.com/cloudreve/Cloudreve/v4","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","ranges":["<4.0.0-20260613023150-7968e50429ef"],"fixed":["4.0.0-20260613023150-7968e50429ef"]},{"ecosystem":"Go","name":"github.com/cloudreve/Cloudreve/v3","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v3","ranges":["<=3.0.0-20250225100611-da4e44b77af4"],"fixed":[]}]},{"id":"GO-2026-6097","url":"https://osv.dev/vulnerability/GO-2026-6097","summary":"Cloudreve: Path Traversal in WOPI PUT_RELATIVE Allows Arbitrary File Creation in Owner Account in github.com/cloudreve/Cloudreve","modified":"2026-08-18T15:00:19.853802547Z","packages":[{"ecosystem":"Go","name":"github.com/cloudreve/Cloudreve","purl":"pkg:golang/github.com/cloudreve/Cloudreve","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/cloudreve/Cloudreve/v3","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v3","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/cloudreve/Cloudreve/v4","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","ranges":["<4.0.0-20260613023150-7968e50429ef"],"fixed":["4.0.0-20260613023150-7968e50429ef"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}