Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/libfuse/sshfs/commit/29bb565ea6405e2dd5a0ea65fe64da117e76055e
- https://github.com/libfuse/sshfs/pull/362
- https://github.com/libfuse/sshfs/releases/tag/sshfs-3.7.6
- https://github.com/libfuse/sshfs/security/advisories/GHSA-mm85-q63v-4476
FAQ
What is CVE-2026-48711?
CVE-2026-48711 is a vulnerability with a CVSS score of 7.0 (HIGH). 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...
How severe is CVE-2026-48711?
CVE-2026-48711 has been rated HIGH with a CVSS base score of 7.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-48711?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.