rclone before 1.74.4 Privilege Escalation via setuid Metadata
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.
BIT-rclone-2026-79783
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:BIT-rclone-2026-79783
rclone
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.74.4
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.74.4"
}
]
}
],
"package": {
"name": "rclone",
"purl": "pkg:bitnami/rclone",
"ecosystem": "Bitnami"
},
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"database_specific": {
"source": "https://github.com/bitnami/vulndb/tree/main/data/rclone/BIT-rclone-2026-79783.json"
}
}
]- Related CVEs
- CVE-2026-79783
Source reference:
/aliases
Publisher severity
low
Source reference: /database_specific/severity
- Event
- #15285 · Revision 1
- Added to Heist Feed
- Publisher date