CVE-2026-47187
sshfs: SSHFS Symlink Escape: Rogue SFTP Server → Local File Read/Write
Severidad por fuente
La etiqueta propia de Trivy es CRITICAL. Crítica según Red Hat.
Descripción
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.
Paquetes afectados y versiones corregidas
| Fuente | Paquete | Corregido en |
|---|---|---|
| Red Hat | fuse-sshfs | sin corrección indicada |
| alpine 3.20 | sshfs | 3.7.6-r0 |
| alpine 3.21 | sshfs | 3.7.6-r0 |
| alpine 3.22 | sshfs | 3.7.6-r0 |
| alpine 3.23 | sshfs | 3.7.6-r0 |
| alpine 3.24 | sshfs | 3.7.6-r0 |
| alpine edge | sshfs | 3.7.6-r0 |
| debian 11 | sshfs-fuse | sin corrección indicada |
| debian 12 | sshfs-fuse | 3.7.3-1.2~deb12u1 |
| debian 13 | sshfs-fuse | 3.7.3-1.2~deb13u1 |
| debian 14 | sshfs-fuse | 3.7.3-1.2 |
| echo | sshfs-fuse | 3.7.3-1.2~deb12u1 |
Mostrar las 18 entradas de 18 fuentes
| Fuente | Paquete | Corregido en |
|---|---|---|
| Red Hat | fuse-sshfs | sin corrección indicada |
| alpine 3.20 | sshfs | 3.7.6-r0 |
| alpine 3.21 | sshfs | 3.7.6-r0 |
| alpine 3.22 | sshfs | 3.7.6-r0 |
| alpine 3.23 | sshfs | 3.7.6-r0 |
| alpine 3.24 | sshfs | 3.7.6-r0 |
| alpine edge | sshfs | 3.7.6-r0 |
| debian 11 | sshfs-fuse | sin corrección indicada |
| debian 12 | sshfs-fuse | 3.7.3-1.2~deb12u1 |
| debian 13 | sshfs-fuse | 3.7.3-1.2~deb13u1 |
| debian 14 | sshfs-fuse | 3.7.3-1.2 |
| echo | sshfs-fuse | 3.7.3-1.2~deb12u1 |
| rapidfort alpine 3.20 | sshfs | 3.7.6-r0 |
| rapidfort alpine 3.21 | sshfs | 3.7.6-r0 |
| rapidfort alpine 3.22 | sshfs | 3.7.6-r0 |
| rapidfort alpine 3.24 | sshfs | 3.7.6-r0 |
| rapidfort debian 12 | sshfs-fuse | 0:3.7.3-1.2~deb12u1 |
| rapidfort debian 13 | sshfs-fuse | 0:3.7.3-1.2~deb12u1 |
Referencias
- https://access.redhat.com/security/cve/CVE-2026-47187
- https://github.com/libfuse/sshfs/commit/bcd132f17ccf1b8592a229df797c9b08883fec26
- https://github.com/libfuse/sshfs/pull/361
- https://github.com/libfuse/sshfs/releases/tag/sshfs-3.7.6
- https://github.com/libfuse/sshfs/security/advisories/GHSA-pjv6-2c3f-r357
- https://nvd.nist.gov/vuln/detail/CVE-2026-47187
- https://www.cve.org/CVERecord?id=CVE-2026-47187