High severity · published Oct 25, 2026
CVE-2026-116189
rclone 1.55.0 before 1.75.2 selfupdate Signature Verification Bypass via SHA256SUMS
New
7.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RC
rclone · rclone
1.55.0 before 1.75.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116189
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116189
github.com
https://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8
www.vulncheck.com
https://www.vulncheck.com/advisories/rclone-1.55.0-before-1.75.2-selfupdate-signature-verification-bypass-via-sha256sums
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