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High, CVSS 7.7amended

rclone 1.55.0 before 1.75.2 selfupdate Signature Verification Bypass via SHA256SUMS

CVE-2026-116189GHSA-w33h-3qgq-8mv8

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
    >= 1.55.0, < 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
7.7 · CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/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-2026-116189: 0.14% estimated exploitation activity in the next 30 days; percentile 3.57 (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 1.55.0 before 1.75.2 contains a signature verification bypass in stable selfupdate that trusts checksums from unsigned bytes preceding the PGP-clearsigned SHA256SUMS block. Attackers controlling the release distribution path can prepend an unsigned checksum line matching a malicious archive, causing selfupdate to install an attacker-controlled rclone executable.

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-2026-116189

  2. Revision 1 · created ·

    Published from osv record BIT-rclone-2026-116189

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-2026-116189

Advisory: rclone 1.55.0 before 1.75.2 selfupdate Signature Verification Bypass via SHA256SUMS
IDs: CVE-2026-116189, GHSA-w33h-3qgq-8mv8
Record: https://patchnext.com/advisories/cve-2026-116189 (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: High (CVSS 7.7)
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 >= 1.55.0, < 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-2026-116189 (OSV record BIT-rclone-2026-116189 lists affected ranges: Bitnami rclone >=1.55.0 <1.75.2 (fixed))

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