{"cve":"CVE-2026-71310","nvd":{"published":"2026-08-05T21:16:58.573","modified":"2026-09-09T20:50:00.950","status":"Awaiting Analysis","description":"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 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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9},"cwes":["CWE-400","CWE-770"],"references":["https://github.com/rclone/rclone/commit/21d8cd3b92cd81d987f485051d454ea675d91a2b","https://github.com/rclone/rclone/releases/tag/v1.75.0","https://github.com/rclone/rclone/security/advisories/GHSA-xhf4-832v-7xcr","https://pkg.go.dev/vuln/GO-2026-6199","https://github.com/rclone/rclone/security/advisories/GHSA-xhf4-832v-7xcr"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:47:10.050265369+00:00"},"epss":{"cve":"CVE-2026-71310","score":0.00611,"percentile":0.49242,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-xhf4-832v-7xcr","url":"https://osv.dev/vulnerability/GHSA-xhf4-832v-7xcr","summary":"rclone: Unbounded HTTP CONNECT Response Headers Can Exhaust rclone Memory","modified":"2026-09-10T03:51:14.731758103Z","packages":[{"ecosystem":"Go","name":"github.com/rclone/rclone","purl":"pkg:golang/github.com/rclone/rclone","ranges":["<1.75.0"],"fixed":["1.75.0"]}]},{"id":"GO-2026-6199","url":"https://osv.dev/vulnerability/GO-2026-6199","summary":"Resource exhaustion via unbounded HTTP CONNECT response in github.com/rclone/rclone","modified":"2026-08-18T17:23:55.880706478Z","packages":[{"ecosystem":"Go","name":"github.com/rclone/rclone","purl":"pkg:golang/github.com/rclone/rclone","ranges":["<1.75.0"],"fixed":["1.75.0"]}]}],"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."]}