CVE-2026-116189

High

Description

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.

SeverityHigh

CVSS7.5

Exploit probability—

ProductRclone

PublishedOct 25, 2026

First seenOct 25, 2026

Weakness typeCWE-347CWE-347

How to fix

Update

rclone rclone1.75.2 or later

Vendor advisories

github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8

Affected products

Product	Affected versions	Fixed in
rclone rclone	1.55.0 ≤ v < 1.75.2	1.75.2

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