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Medium, CVSS 6.1amended

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

CVE-2026-116187GHSA-35g6-9fjv-rmx5

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (rclone 1.75.2), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • Bitnami rclone

    Affected
    >= 1.68.0, < 1.75.2
    Fixed in
    1.75.2

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
6.1 · CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · score source
EPSS
  • CVE-2026-116187: 0.14% estimated exploitation activity in the next 30 days; percentile 3.63 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

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.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from osv record BIT-rclone-2026-116187

  2. Revision 1 · created ·

    Published from osv record BIT-rclone-2026-116187

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2026-116187

Advisory: Rclone v1.68.0 before v1.75.2 Authorization Bypass in serve s3 Multipart Uploads
IDs: CVE-2026-116187, GHSA-35g6-9fjv-rmx5
Record: https://patchnext.com/advisories/cve-2026-116187 (revision 2, source checked 31 Oct 2026, 07:05 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: rclone 1.75.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- Bitnami rclone: affected >= 1.68.0, < 1.75.2; fixed in 1.75.2

## Suggested inspection (read-only)
- Bitnami rclone: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on rclone.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/BIT-rclone-2026-116187 (OSV record BIT-rclone-2026-116187 lists affected ranges: Bitnami rclone >=1.68.0 <1.75.2 (fixed))

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