What’s Vulnerable › Vulnerabilities

CVE-2026-116189: rclone 1.55.0 before 1.75.2 selfupdate Signature Verification Bypass via SHA256SUMS

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-25 · updated 2026-10-29
• Weakness: CWE-347

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.

Affected products

• rclone: from 1.55.0 before 1.75.2 — fixed in 1.75.2
• rclone: from 1.55.0 before 1.75.2 — fixed in 1.75.2

How to fix

Upgrade to a fixed version: rclone 1.75.2; rclone 1.75.2. Check the vendor advisory for mitigations.

References

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

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