rclone: http backend forwards custom/auth headers to a different host on redirect
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.
BIT-rclone-2026-88013
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:BIT-rclone-2026-88013
rclone
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.75.1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "1.49.0"
},
{
"fixed": "1.75.1"
}
]
}
],
"package": {
"name": "rclone",
"purl": "pkg:bitnami/rclone",
"ecosystem": "Bitnami"
},
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
}
],
"database_specific": {
"source": "https://github.com/bitnami/vulndb/tree/main/data/rclone/BIT-rclone-2026-88013.json"
}
}
]- Related CVEs
- CVE-2026-88013
Source reference:
/aliases
Publisher severity
medium
Source reference: /database_specific/severity
- Event
- #10910 · Revision 1
- Added to Heist Feed
- Publisher date