CVE-2026-79783

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.

CVSS v3 3.6 LOW

3.6^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.0 / Impact : 2.5

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/rclone/rclone/security/advisories/GHSA-945v-v9p3-v5xw
https://www.vulncheck.com/advisories/rclone-before-privilege-escalation-via-setuid-metadata
https://github.com/rclone/rclone/security/advisories/GHSA-945v-v9p3-v5xw

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-25 16:17

Updated : 2026-09-10 20:46

NVD link : CVE-2026-79783

Mitre link : CVE-2026-79783

CVE.ORG link : CVE-2026-79783

JSON object : View

Products Affected

No product.

CWE

CWE-732

Incorrect Permission Assignment for Critical Resource

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