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Vulnerability record · CVE-2026-47187 · published 19 August 2026

CVE-2026-47187: Link following vulnerability

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.

9.3 CVSS 3.1 Critical EPSS 0.50% · top 59.9% CWE-59 · Link following Deferred
9.3CVSS 3.1 base score
0.50%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
9 Sep 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

References

LinkTags
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

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Source: NIST National Vulnerability Database (record CVE-2026-47187), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.