Authorization Bypass Through User-Controlled Key Affecting rclone package, versions <1.75.2-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.15% (5th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-RCLONE-21709417
  • published26 Oct 2026
  • disclosed25 Oct 2026

Introduced: 25 Oct 2026

NewCVE-2026-116187  (opens in a new tab)
CWE-639  (opens in a new tab)

How to fix?

Upgrade Debian:unstable rclone to version 1.75.2-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rclone package and not the rclone package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Rclone from v1.68.0 before v1.75.2 contains an authorization bypass vulnerability in serve s3 --auth-proxy that allows authenticated tenants to manipulate other tenants' multipart uploads by referencing their upload IDs. Attackers who learn a victim's bucket, object, and upload ID can inject parts, complete, or abort in-flight uploads and view upload and object metadata across tenants.

CVSS Base Scores

version 3.1