Bug 2519686 (CVE-2026-47187) - CVE-2026-47187 sshfs: SSHFS Symlink Escape: Rogue SFTP Server → Local File Read/Write
Summary: CVE-2026-47187 sshfs: SSHFS Symlink Escape: Rogue SFTP Server → Local File Re...
Keywords:
Status: NEW
Alias: CVE-2026-47187
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
urgent
urgent
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2542528 2542529
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-19 15:03 UTC by OSIDB Bzimport
Modified: 2026-10-01 15:31 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-08-19 15:03:19 UTC
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.


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