{"id":"CVE-2026-71310","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. Prior to 1.75.0, the shared HTTP CONNECT helper in lib/proxy/http.go parses proxy CONNECT responses with http.ReadResponse over…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400","CWE-770"],"vendor":"rclone","product":"github.com/rclone/rclone","affected":["github.com/rclone/rclone <= 1.74.0"],"patched":["github.com/rclone/rclone 1.75.0"],"published":"2026-08-05","updated":"2026-09-09","sourceUpdated":"2026-09-09T20:50:00.950","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-71310","references":[{"url":"https://github.com/rclone/rclone/commit/21d8cd3b92cd81d987f485051d454ea675d91a2b","label":"security-advisories@github.com"},{"url":"https://github.com/rclone/rclone/releases/tag/v1.75.0","label":"security-advisories@github.com"},{"url":"https://github.com/rclone/rclone/security/advisories/GHSA-xhf4-832v-7xcr","label":"security-advisories@github.com"},{"url":"https://pkg.go.dev/vuln/GO-2026-6199","label":"security-advisories@github.com"},{"url":"https://github.com/rclone/rclone/security/advisories/GHSA-xhf4-832v-7xcr","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/advisories/GHSA-xhf4-832v-7xcr"}],"tags":["nvd","ghsa","go"],"epss":0.00611,"epssPercentile":0.47001,"aliases":["GHSA-xhf4-832v-7xcr"],"ecosystem":"go","ingestedAt":"2026-08-05T20:51:28.050Z","slug":"CVE-2026-71310","body":"## Overview\n\nrclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.0, the shared HTTP CONNECT helper in lib/proxy/http.go parses proxy CONNECT responses with http.ReadResponse over an unrestricted buffered reader, allowing a malicious or compromised configured proxy, or an active on-path actor controlling a plaintext HTTP proxy hop, to send oversized headers that grow memory until the rclone process fails. The affected helper is used by FTP and SFTP proxy connections, and SFTP reaches the parser before SSH server authentication, so target host key validation does not constrain a malicious proxy. This issue is fixed in 1.75.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-71310)\n\nAffected packages:\n\n- `github.com/rclone/rclone <= 1.74.0`\n\nPatched in:\n\n- `github.com/rclone/rclone 1.75.0`\n\nSource: https://github.com/advisories/GHSA-xhf4-832v-7xcr","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}