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
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 F
Affected packages
- rclone
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://www.cve.org/CVERecord?id=CVE-2026-71310
- https://github.com/rclone/rclone/security/advisories/GHSA-xhf4-832v-7xcr
- https://github.com/rclone/rclone/commit/21d8cd3b92cd81d987f485051d454ea675d91a2b
- https://github.com/rclone/rclone/releases/tag/v1.75.0
Structured record: https://ubuntu.com/security/CVE-2026-71310
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