CVE-2026-88013
rclone: http backend forwards custom/auth headers to a different host on redirect
Using rclone by rclone?
Get instant alerts when new vulnerabilities affect rclone - before attackers find them.
Description
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://github.com/rclone/rclone/security/advisories/GHSA-486v-q2wf-fp2r
- https://github.com/rclone/rclone/commit/22859b7e696cea3c563c6ba04c6b7f91f74456b4
- https://github.com/rclone/rclone/commit/79fbc0842f74e02cb84f0e3e7261d169983c8831
- https://github.com/rclone/rclone/commit/925fb4fb21eb25e75cd1b64fdd17ded857784bfc
References (5)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Quick Info
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.