{"cve":"CVE-2026-88044","nvd":{"published":"2026-09-10T17:17:08.387","modified":"2026-09-10T19:54:25.810","status":"Awaiting Analysis","description":"rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.70.0 until 1.75.1, the serve/start RC interface accepts per-server proxyOpt.AuthProxy settings, and the FTP and S3 constructors in cmd/serve/ftp/ftp.go and cmd/serve/s3/server.go incorrectly check the process-global proxy.Opt.AuthProxy value instead. When the global value is empty, the request-local authentication proxy is ignored: FTP falls back to the fixed filesystem with username anonymous and any password, while S3 with AuthKey serves the fixed RC fs rather than the backend selected by the proxy. The dedicated command-line servers that configure the global option are not affected. This issue is fixed in version 1.75.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-863"],"references":["https://github.com/rclone/rclone/commit/739403963abf6f58003c2becd5f7c4ad0d644153","https://github.com/rclone/rclone/releases/tag/v1.75.1","https://github.com/rclone/rclone/security/advisories/GHSA-p569-5gjg-9cmj","https://github.com/rclone/rclone/security/advisories/GHSA-p569-5gjg-9cmj"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:52:53.108888569+00:00"},"epss":{"cve":"CVE-2026-88044","score":0.00492,"percentile":0.42292,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-p569-5gjg-9cmj","url":"https://osv.dev/vulnerability/GHSA-p569-5gjg-9cmj","summary":"rclone: RC per-server auth-proxy bypass","modified":"2026-09-19T09:25:36.536687356Z","packages":[{"ecosystem":"Go","name":"github.com/rclone/rclone","purl":"pkg:golang/github.com/rclone/rclone","ranges":[">=1.70.0 <1.75.1"],"fixed":["1.75.1"]}]},{"id":"GO-2026-6460","url":"https://osv.dev/vulnerability/GO-2026-6460","summary":"rclone: RC per-server auth-proxy bypass in github.com/rclone/rclone","modified":"2026-09-19T09:25:36.536687356Z","packages":[{"ecosystem":"Go","name":"github.com/rclone/rclone","purl":"pkg:golang/github.com/rclone/rclone","ranges":[">=1.70.0 <1.75.1"],"fixed":["1.75.1"]}]}],"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."]}