{"id":"CVE-2026-88044","title":"rclone is a command-line program to sync files and directories to and from different cloud storage providers","summary":"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 const…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-863"],"vendor":"rclone","product":"rclone","affected":["rclone >= 1.70.0, < 1.75.1"],"published":"2026-09-10","updated":"2026-09-10","sourceUpdated":"2026-09-10T19:54:25.810","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88044","references":[{"url":"https://github.com/rclone/rclone/commit/739403963abf6f58003c2becd5f7c4ad0d644153","label":"security-advisories@github.com"},{"url":"https://github.com/rclone/rclone/releases/tag/v1.75.1","label":"security-advisories@github.com"},{"url":"https://github.com/rclone/rclone/security/advisories/GHSA-p569-5gjg-9cmj","label":"security-advisories@github.com"},{"url":"https://github.com/rclone/rclone/security/advisories/GHSA-p569-5gjg-9cmj","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88044"},{"url":"https://github.com/rclone/rclone"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88044.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-88044"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-88044"}],"tags":["nvd","cve.org","exploit-available","osv","go","csaf","vex","red-hat"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-09-10T17:14:25.073045Z"},"ingestedAt":"2026-09-14T02:48:08.739Z","epss":0.00492,"epssPercentile":0.41208,"aliases":["GHSA-p569-5gjg-9cmj","GO-2026-6460","BIT-rclone-2026-88044"],"ecosystem":"go","patched":["github.com/rclone/rclone 1.75.1"],"slug":"CVE-2026-88044","body":"## Overview\n\nrclone 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-88044)\n\nAffected packages:\n\n- `github.com/rclone/rclone >= 1.70.0, < 1.75.1`\n\nPatched in:\n\n- `github.com/rclone/rclone 1.75.1`\n\nSource: https://osv.dev/vulnerability/GHSA-p569-5gjg-9cmj\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88044.json)","depth":"abyssal","depthScore":62,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":52141,"id":"CVE-2026-88044","ts":1789063373300,"field":"exploit_available","old":"false","new":"true"}]}