CVE-2026-88013Low· 3.7▾ TwilightPoC availablerclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.49.0 until 1.75.1, the HTTP backend attaches headers configured through --http-headers or headers= to requests in backen…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 20.4 · likelihood 0 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 11.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Exploit / PoC code exists
0.2%
rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.49.0 until 1.75.1, the HTTP backend attaches headers configured through --http-headers or headers= to requests in backend/http/http.go, while its fshttp.NewClient client follows redirects without a backend-specific http.Client.CheckRedirect policy. A configured remote that redirects to another host can therefore cause custom secrets such as X-Api-Key to be resent to that untrusted destination, and a same-host HTTPS-to-HTTP redirect can expose Authorization or Cookie headers in cleartext. Listing, stat, download, mount, and serve operations can trigger the leak during normal use. This issue is fixed in version 1.75.1.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
github.com/rclone/rclone >= 1.49.0, < 1.75.1Patched in:
github.com/rclone/rclone 1.75.1Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-88018Critical· 9.8rclone is a command-line program to sync files and directories to and from different cloud storage providers
CVE-2026-88044Critical· 9.1rclone is a command-line program to sync files and directories to and from different cloud storage providers
CVE-2026-88015Medium· 5.3rclone is a command-line program to sync files and directories to and from different cloud storage providers
CVE-2026-88045High· 7.5rclone is a command-line program to sync files and directories to and from different cloud storage providers
CVE-2026-88016High· 7.1rclone is a command-line program to sync files and directories to and from different cloud storage providers
CVE-2026-88046Medium· 5.3rclone is a command-line program to sync files and directories to and from different cloud storage providers