CVE-2026-47187

Name	CVE-2026-47187
Description	SSHFS is a network filesystem client for connecting to SSH servers. Prior to version 3.7.6, a rogue SFTP server can return absolute symlink targets or relative targets containing parent-directory components that SSHFS passes through FUSE for resolution by the client kernel against the local filesystem. The documented transform_symlinks mitigation does not contain relative targets because transform_symlink() returns early at sshfs.c:2181, while sshfs_readlink() at sshfs.c:2234 to sshfs.c:2236 otherwise copies the server-supplied link target to the kernel. A victim or victim-side tool that follows such a link through ordinary operations such as cp, rsync, backup tooling, or an editor can disclose readable local files back to the server or write server-controlled content to writable local files, potentially including startup or scheduled-task files. This issue is fixed in version 3.7.6.
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	1138293

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
sshfs-fuse (PTS)	bullseye	3.7.1+repack-2	vulnerable
	bookworm	3.7.3-1.2~deb12u1	fixed
	trixie	3.7.3-1.2~deb13u1	fixed
	forky, sid	3.7.3-1.2	fixed

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

Package	Type	Release	Fixed Version	Debian Bugs
sshfs-fuse	source	bookworm	3.7.3-1.2~deb12u1
sshfs-fuse	source	trixie	3.7.3-1.2~deb13u1
sshfs-fuse	source	(unstable)	3.7.3-1.2	1138293

Notes

[bullseye] - sshfs-fuse <postponed> (Minor issue)
https://www.openwall.com/lists/oss-security/2026/05/30/3
https://github.com/libfuse/sshfs/security/advisories/GHSA-pjv6-2c3f-r357
https://github.com/libfuse/sshfs/pull/361
Fixed by: https://github.com/libfuse/sshfs/commit/bcd132f17ccf1b8592a229df797c9b08883fec26 (sshfs-3.7.6)