Vulnerability-Lookup

CVE-2026-48711 (GCVE-0-2026-48711)

Vulnerability from cvelistv5 – Published: 2026-08-19 14:42 – Updated: 2026-08-20 18:28

Title

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

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.

Severity

7 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-20 03:56 UTC

CWE

CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/libfuse/sshfs/security/advisor…	x_refsource_CONFIRM
https://github.com/libfuse/sshfs/pull/362	x_refsource_MISC
https://github.com/libfuse/sshfs/commit/29bb565ea…	x_refsource_MISC
https://github.com/libfuse/sshfs/releases/tag/ssh…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
libfuse	sshfs	Affected: < 3.7.6	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-48711

Vulnerability from fkie_nvd - Published: 2026-08-19 15:17 - Updated: 2026-08-20 19:16

Severity

7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/libfuse/sshfs/commit/29bb565ea6405e2dd5a0ea65fe64da117e76055e
	security-advisories@github.com	https://github.com/libfuse/sshfs/pull/362
	security-advisories@github.com	https://github.com/libfuse/sshfs/releases/tag/sshfs-3.7.6
	security-advisories@github.com	https://github.com/libfuse/sshfs/security/advisories/GHSA-mm85-q63v-4476

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "sshfs",
          "vendor": "libfuse",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.7.6"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-48711",
  "lastModified": "2026-08-20T19:16:52.933",
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OPENSUSE-SU-2026:20915-1

Vulnerability from csaf_opensuse - Published: 2026-06-05 21:40 - Updated: 2026-06-05 21:40

Summary

Security update for sshfs

Severity

Critical

Notes

Title of the patch: Security update for sshfs

Description of the patch: This update for sshfs fixes the following issues: Changes in sshfs: - Update to 3.7.6: - Added new maintainer: abhinavagarwal07 Abhinav Agarwal - CVE-2026-47187: Fixed critical vulnerability - Symlink Escape: Rogue SFTP Server to Local File Read/Write), credit to abhinavagarwal07 (bsc#1267017) - New -o contain_symlinks and -o no_contain_symlinks to control symlink containment behavior - CVE-2026-48711: Fixed high severity vulnerability - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection'), credit to abhinavagarwal07 (bsc#1267016) - Fixed null-deref warning in tokenize_on_space, promote strict-warnings to required - Added a number of tests in CI, including rename, chmod, fsync, statvfs values, error paths, option coverage - Fixed malformed SFTP reply handling - Update to 3.7.5: * Implement connect to vsock * use latest major version for actions/checkout * Fix memleak in cache after readlink * Fill stat info when returning cached data for readdir * ipv6 support for directport connection - reverts to original fork - Don't globstar files in shared directory _bindir. - build the man page

Patchnames: openSUSE-Leap-16.0-packagehub-300

CVE-2026-47187

Affected products

Recommended 4 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 16.0:sshfs-3.7.6-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:sshfs-3.7.6-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:sshfs-3.7.6-bp160.1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:sshfs-3.7.6-bp160.1.1.x86_64	—	Vendor Fix

Threats

Impact moderate

CVE-2026-48711

Affected products

Recommended 4 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 16.0:sshfs-3.7.6-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:sshfs-3.7.6-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:sshfs-3.7.6-bp160.1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:sshfs-3.7.6-bp160.1.1.x86_64	—	Vendor Fix

Threats

Impact moderate

References

12 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://bugzilla.suse.com/1267016	self
https://bugzilla.suse.com/1267017	self
https://www.suse.com/security/cve/CVE-2026-47187/	self
https://www.suse.com/security/cve/CVE-2026-48711/	self
https://www.suse.com/security/cve/CVE-2026-47187	external
https://bugzilla.suse.com/1267016	external
https://bugzilla.suse.com/1267017	external
https://www.suse.com/security/cve/CVE-2026-48711	external
https://bugzilla.suse.com/1267016	external
https://bugzilla.suse.com/1267017	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://www.suse.com/support/security/rating/",
      "text": "critical"
    },
    "category": "csaf_security_advisory",
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    "distribution": {
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        "text": "This update for sshfs fixes the following issues:\n\nChanges in sshfs:\n\n- Update to 3.7.6:\n  - Added new maintainer: abhinavagarwal07 Abhinav Agarwal\n  - CVE-2026-47187: Fixed critical vulnerability - Symlink\n    Escape: Rogue SFTP Server to Local File Read/Write), credit\n    to abhinavagarwal07 (bsc#1267017)\n  - New -o contain_symlinks and -o no_contain_symlinks to control\n    symlink containment behavior\n  - CVE-2026-48711: Fixed high severity vulnerability - Improper\n    Neutralization of Argument Delimiters in a Command (\u0027Argument\n    Injection\u0027), credit to abhinavagarwal07 (bsc#1267016)\n  - Fixed null-deref warning in tokenize_on_space, promote\n    strict-warnings to required\n  - Added a number of tests in CI, including rename, chmod,\n    fsync, statvfs values, error paths, option coverage\n  - Fixed malformed SFTP reply handling\n\n- Update to 3.7.5:\n  * Implement connect to vsock\n  * use latest major version for actions/checkout\n  * Fix memleak in cache after readlink\n  * Fill stat info when returning cached data for readdir\n  * ipv6 support for directport connection\n- reverts to original fork\n\n- Don\u0027t globstar files in shared directory _bindir.\n\n- build the man page\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "openSUSE-Leap-16.0-packagehub-300",
        "title": "Patchnames"
      },
      {
        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
      }
    ],
    "publisher": {
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}

ubuntu-cve-2026-48711

Vulnerability from osv_ubuntu

Published

2026-06-01 00:00

Modified

2026-06-01 00:00

Summary

Details

[Unknown description]

Severity

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-48711	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-48711	REPORT
	https://www.openwall.com/lists/oss-security/2026/…	REPORT
	https://github.com/libfuse/sshfs/security/advisor…	REPORT
	https://github.com/libfuse/sshfs/pull/362	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sshfs",
            "binary_version": "2.5-1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "sshfs-fuse",
        "purl": "pkg:deb/ubuntu/sshfs-fuse@2.5-1ubuntu1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.5-1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sshfs",
            "binary_version": "2.8-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "sshfs-fuse",
        "purl": "pkg:deb/ubuntu/sshfs-fuse@2.8-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.8-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sshfs",
            "binary_version": "3.6.0+repack+really2.10-0ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "sshfs-fuse",
        "purl": "pkg:deb/ubuntu/sshfs-fuse@3.6.0+repack+really2.10-0ubuntu1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.10+repack-2",
        "3.6.0+repack-1",
        "3.6.0+repack+really2.10-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sshfs",
            "binary_version": "3.7.1+repack-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "sshfs-fuse",
        "purl": "pkg:deb/ubuntu/sshfs-fuse@3.7.1+repack-2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.0+repack+really2.10-0ubuntu1",
        "3.7.1+repack-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sshfs",
            "binary_version": "3.7.3-1.1build3"
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      },
      "package": {
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        "name": "sshfs-fuse",
        "purl": "pkg:deb/ubuntu/sshfs-fuse@3.7.3-1.1build3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
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      "versions": [
        "3.7.3-1.1build1",
        "3.7.3-1.1build2",
        "3.7.3-1.1build3"
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    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sshfs",
            "binary_version": "3.7.3-1.1build4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "sshfs-fuse",
        "purl": "pkg:deb/ubuntu/sshfs-fuse@3.7.3-1.1build4?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.7.3-1.1build3",
        "3.7.3-1.1build4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sshfs",
            "binary_version": "3.7.3-1.1build5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "sshfs-fuse",
        "purl": "pkg:deb/ubuntu/sshfs-fuse@3.7.3-1.1build5?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
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          "type": "ECOSYSTEM"
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      ],
      "versions": [
        "3.7.3-1.1build4",
        "3.7.3-1.1build5"
      ]
    }
  ],
  "aliases": [],
  "details": "[Unknown description]",
  "id": "UBUNTU-CVE-2026-48711",
  "modified": "2026-06-01T00:00:00Z",
  "published": "2026-06-01T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-48711"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-48711"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2026/05/30/3"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libfuse/sshfs/security/advisories/GHSA-mm85-q63v-4476"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libfuse/sshfs/pull/362"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-48711"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-48711 (GCVE-0-2026-48711)

FKIE_CVE-2026-48711

OPENSUSE-SU-2026:20915-1

ubuntu-cve-2026-48711

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature