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Fencer Vulns
high 7.0

CVE-2026-48711 json

SSHFS: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

published 2026-08-19 2 mo ago modified 2026-09-09 1 mo ago also EUVD-2026-62494

cvss
7.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

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.

Patch / fix

  • sshfs-fuse Debian 12 3.7.3-1.2~deb12u1
  • sshfs-fuse Debian 13 3.7.3-1.2~deb13u1
  • sshfs-fuse Debian 14 3.7.3-1.2

debian advisories DEBIAN-CVE-2026-48711

  • sshfs openSUSE Tumbleweed 3.7.6-1.1

opensuse advisories openSUSE-SU-2026:10952-1

  • sshfs Alpine 3.24, Alpine 3.23, Alpine 3.22 +2 more 3.7.6-r0

alpine advisories ALPINE-CVE-2026-48711

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-48711 updated cvss 7.8

sshfs: SSHFS: Arbitrary command execution via argument injection in mount source

  • Red Hat Enterprise Linux 8 fuse-sshfs
    affected: workaround, no fix available

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
2 mo ago

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • libfuse sshfs

Classification

Weakness
  • CWE-88 Improper Neutralization of Argument Delimiters in a Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.