CVE-2026-79783

Name	CVE-2026-79783
Description	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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1145670

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rclone (PTS)	bullseye	1.53.3-1	vulnerable
	bookworm	1.60.1+dfsg-2	vulnerable
	trixie	1.60.1+dfsg-4	vulnerable
	sid	1.69.3+dfsg-3	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
rclone	source	(unstable)	(unfixed)			1145670

https://github.com/rclone/rclone/security/advisories/GHSA-945v-v9p3-v5xw