CVE-2026-116187

Rclone v1.68.0 before v1.75.2 Authorization Bypass in serve s3 Multipart Uploads

MEDIUM
5
CVSS Score
Published: October 25, 2026 at 01:20 PM UTC
Updated: October 28, 2026 at 03:39 PM UTC
1 product affected across 1 vendorRclone

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Severity
MEDIUM5
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.68.0 ≤ v < 1.75.2
Vendor states this is fixed in 1.75.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-639

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