---
title: "CVE-2026-116189: rclone - Authentication Bypass"
description: "rclone > 1.55.0 and < 1.75.2 contains a signature verification bypass caused by trusting checksums from unsigned bytes preceding the PGP-clearsigned SHA256SUMS block, letting attackers controlling release distribution install malicious executables, exploit requires control over release distribution path."
url: https://panop.io/threat-heartbeat/CVE-2026-116189/
---

# CVE-2026-116189 rclone - Authentication Bypass

rclone > 1.55.0 and < 1.75.2 contains a signature verification bypass caused by trusting checksums from unsigned bytes preceding the PGP-clearsigned SHA256SUMS block, letting attackers controlling release distribution install malicious executables, exploit requires control over release distribution path.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-116189)

## Details

Type

Authentication Bypass

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Published

25 October 2026

Updated

26 October 2026

Weakness

[CWE-347](https://cwe.mitre.org/data/definitions/347.html)

## Vendor fix

Upgrade to version 1.75.2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-116189](https://nvd.nist.gov/vuln/detail/CVE-2026-116189)
- [https://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8](https://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8)
- [https://www.vulncheck.com/advisories/rclone-1.55.0-before-1.75.2-selfupdate-signature-verification-bypass-via-sha256sums](https://www.vulncheck.com/advisories/rclone-1.55.0-before-1.75.2-selfupdate-signature-verification-bypass-via-sha256sums)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)