Detections
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Alpine: multiple sshfs packages: security update to 3.7.6-r0

critical Tenable Cloud Security Plugin ID 442733

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

 - 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. (CVE-2026-47187)

 - SSHFS is a network filesystem client for connecting to SSH servers. From version 1.4 until 3.7.6, SSHFS
 accepts a bracketed mount source such as [-oProxyCommand=CMD]:/path and find_base_path() removes the
 brackets, leaving a host value that begins with - and is passed directly to ssh as a command-line
 argument. When a caller also supplies a path-valued sftp_server, ssh treats the normalized host as an
 option and the server path as its destination, causing an injected ProxyCommand to execute locally before
 any connection or authentication succeeds. The attack requires a caller or wrapper that passes an
 attacker-controlled mount source to SSHFS with the required sftp_server configuration and results in
 arbitrary command execution as the user running SSHFS. This issue is fixed in version 3.7.6.
 (CVE-2026-48711)

Solution

Update the sshfs library and its related packages to version 3.7.6-r0 or later.

See Also

https://security.alpinelinux.org/vuln/CVE-2026-47187

https://security.alpinelinux.org/vuln/CVE-2026-48711

Plugin Details

Severity: Critical

ID: 442733

Version: Revision 1.4

Type: Local

Published: 6/7/2026

Updated: 8/21/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.17

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2026-47187

CVSS v3

Risk Factor: Critical

Base Score: 9.3

Temporal Score: 8.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Reference Information

CVE: CVE-2026-47187, CVE-2026-48711