CVE-2026-79783
Published:August 25, 2026
Updated:September 24, 2026
rclone before 1.74.4 fails to mask special permission bits when applying source-supplied mode metadata in the local backend, allowing attackers to set setuid/setgid bits on attacker-controlled files. When copying with metadata preservation from an untrusted remote, attackers can plant a setuid binary that escalates privileges to root if rclone runs as root, or to the service account user otherwise.
Affected Packages
https://github.com/rclone/rclone.git (GITHUB):
Affected version(s) >=v1.59.0 <v1.74.4Fix Suggestion:
Update to version v1.74.4github.com/rclone/rclone (GO):
Affected version(s) >=v0.0.0-20140703205654-48d259da68d4 <v1.74.4Fix Suggestion:
Update to version v1.74.4Related Resources (7)
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Contact UsCVSS v4
Base Score:
2
Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.6
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Incorrect Permission Assignment for Critical Resource
EPSS
Base Score:
0.14