CVE-2026-116187

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 v3 5.0 MEDIUM

5.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/rclone/rclone/security/advisories/GHSA-35g6-9fjv-rmx5	Vendor Advisory
https://www.vulncheck.com/advisories/rclone-1.68.0-before-1.75.2-authorization-bypass-in-serve-s3-multipart-uploads	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*

History

28 Oct 2026, 15:39

Type	Values Removed	Values Added
CPE		cpe:2.3:a:rclone:rclone::::::::
First Time		Rclone Rclone rclone
References	~~() https://github.com/rclone/rclone/security/advisories/GHSA-35g6-9fjv-rmx5 -~~	() https://github.com/rclone/rclone/security/advisories/GHSA-35g6-9fjv-rmx5 - Vendor Advisory
References	~~() https://www.vulncheck.com/advisories/rclone-1.68.0-before-1.75.2-authorization-bypass-in-serve-s3-multipart-uploads -~~	() https://www.vulncheck.com/advisories/rclone-1.68.0-before-1.75.2-authorization-bypass-in-serve-s3-multipart-uploads - Third Party Advisory

25 Oct 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-25 14:16

Updated : 2026-10-28 15:39

NVD link : CVE-2026-116187

Mitre link : CVE-2026-116187

CVE.ORG link : CVE-2026-116187

JSON object : View

Products Affected

rclone

rclone

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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