DEBIAN-CVE-2026-88018
rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.1, rclone serve s3 configured with --auth-proxy but without --auth-key allows authPairMiddleware to register any client-chosen accessKeyID with an empty ws.s3Secret. gofakes3 then verifies the request’s SigV4 signature against that same empty secret, while Server.auth passes the access key identifier as both the user and authentication value to the proxy without an independent per-identity secret. An unauthenticated network attacker can therefore choose an arbitrary access key, sign with an empty secret, and reach whatever backend the auth-proxy script resolves for that identity. This issue is fixed in version 1.75.1.
DEBIAN-CVE-2026-88018
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:DEBIAN-CVE-2026-88018
rclone
Source reference: /affected/0/package/name
- Affected versions
- 1.60.1+dfsg-4
Source reference:
/affected/0/versions1.65.0+dfsg-1Source reference:
/affected/0/versions1.65.0+dfsg-2Source reference:
/affected/0/versions1.69.3+dfsg-1Source reference:
/affected/0/versions1.69.3+dfsg-2Source reference:
/affected/0/versions1.69.3+dfsg-3Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rclone",
"purl": "pkg:deb/debian/rclone?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.60.1+dfsg-4",
"1.65.0+dfsg-1",
"1.65.0+dfsg-2",
"1.69.3+dfsg-1",
"1.69.3+dfsg-2",
"1.69.3+dfsg-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88018.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]- Related CVEs
- CVE-2026-88018
Source reference:
/upstream
Publisher severity
critical
Source reference: /severity/0/score
- Event
- #83592 · Revision 1
- Added to Heist Feed
- Publisher date