---
id: CVE-2026-116189
title: >-
  rclone 1.55.0 before 1.75.2 selfupdate Signature Verification Bypass via
  SHA256SUMS
summary: >-
  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 …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-347
vendor: rclone
product: rclone
affected:
  - rclone >= 1.55.0 < 1.75.2
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-29T19:59:32.049046Z'
exploitAvailable: true
published: '2026-10-25'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T19:59:55.648Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116189'
references:
  - url: 'https://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8'
    label: GitHub Security Advisory (GHSA-w33h-3qgq-8mv8)
  - url: >-
      https://www.vulncheck.com/advisories/rclone-1.55.0-before-1.75.2-selfupdate-signature-verification-bypass-via-sha256sums
    label: >-
      VulnCheck Advisory: rclone 1.55.0 before 1.75.2 selfupdate Signature
      Verification Bypass via SHA256SUMS
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-116189.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-116189'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2560412'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-116189'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-116189'
tags:
  - cve.org
  - exploit-available
  - csaf
  - vex
  - red-hat
epss: 0.00142
epssPercentile: 0.03526
ingestedAt: '2026-10-25T22:08:29.942Z'
---

## Overview

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.

## Affected

- `rclone >= 1.55.0 < 1.75.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Important · affected: Cryostat 4, Red Hat Advanced Cluster Management for Kubernetes 2 · no fix planned: Cryostat 4, Red Hat Advanced Cluster Management for Kubernetes 2 · updated 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-116189.json)