CVE-2026-116189

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8	Vendor Advisory
https://www.vulncheck.com/advisories/rclone-1.55.0-before-1.75.2-selfupdate-signature-verification-bypass-via-sha256sums	Third Party Advisory
https://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*

History

29 Oct 2026, 20:17

Type	Values Removed	Values Added
References	~~() https://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8 - Vendor Advisory~~	() https://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8 - Vendor Advisory

28 Oct 2026, 15:38

Type	Values Removed	Values Added
CPE		cpe:2.3:a:rclone:rclone::::::::
References	~~() https://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8 -~~	() https://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8 - Vendor Advisory
References	~~() 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 - Third Party Advisory
First Time		Rclone Rclone rclone

25 Oct 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-25 14:16

Updated : 2026-10-29 20:17

NVD link : CVE-2026-116189

Mitre link : CVE-2026-116189

CVE.ORG link : CVE-2026-116189

JSON object : View

Products Affected

rclone

rclone

CWE

CWE-347

Improper Verification of Cryptographic Signature

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