Critical
sshfs-fuse — security advisory
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.
- Products
- sshfs-fuse
- Affected versions
- 2.10+repack-2, 2.5-1ubuntu1, 2.8-1, 3.6.0+repack+really2.10-0ubuntu1, 3.6.0+repack-1, 3.7.1+repack-2, 3.7.3-1.1build1, 3.7.3-1.1build2, 3.7.3-1.1build3, 3.7.3-1.1build4, 3.7.3-1.1build5, 3.7.3-1.2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-47187
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:05 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-47187
sshfs-fuse
Fixed versions: Not specified
sshfs-fuse
Fixed versions: Not specified
sshfs-fuse
Fixed versions: Not specified
sshfs-fuse
Fixed versions: Not specified
sshfs-fuse
Fixed versions: Not specified
sshfs-fuse
Fixed versions: Not specified
sshfs-fuse
Fixed versions: Not specified
sshfs-fuse
Fixed versions: Not specified
Complete source record
{
"id": "94dbfa94229752d6698ae74bf458c7df8bd942c3ebc8463fedec6ec9c5b18920",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-47187",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-47187",
"summary": "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.",
"evidence": "osv:UBUNTU-CVE-2026-47187",
"products": [
{
"name": {
"value": "sshfs-fuse",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.5-1ubuntu1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "sshfs-fuse",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.8-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
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"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.10+repack-2",
"evidence": "/affected/2/versions"
},
{
"value": "3.6.0+repack-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.6.0+repack+really2.10-0ubuntu1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "sshfs-fuse",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.6.0+repack+really2.10-0ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "3.7.1+repack-2",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "sshfs-fuse",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.7.3-1.1build1",
"evidence": "/affected/4/versions"
},
{
"value": "3.7.3-1.1build2",
"evidence": "/affected/4/versions"
},
{
"value": "3.7.3-1.1build3",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "sshfs-fuse",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.7.3-1.1build3",
"evidence": "/affected/5/versions"
},
{
"value": "3.7.3-1.1build4",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "sshfs-fuse",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.7.3-1.1build5",
"evidence": "/affected/6/versions"
},
{
"value": "3.7.3-1.2",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "sshfs-fuse",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.7.3-1.1build4",
"evidence": "/affected/7/versions"
},
{
"value": "3.7.3-1.1build5",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "UBUNTU-CVE-2026-47187",
"aliases": [
"UBUNTU-CVE-2026-47187"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "sshfs-fuse",
"purl": "pkg:deb/ubuntu/sshfs-fuse?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"2.5-1ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47187.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "sshfs",
"binary_version": "2.5-1ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "sshfs-fuse",
"purl": "pkg:deb/ubuntu/sshfs-fuse?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"2.8-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47187.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "sshfs",
"binary_version": "2.8-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "sshfs-fuse",
"purl": "pkg:deb/ubuntu/sshfs-fuse?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"2.10+repack-2",
"3.6.0+repack-1",
"3.6.0+repack+really2.10-0ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47187.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "sshfs",
"binary_version": "3.6.0+repack+really2.10-0ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "sshfs-fuse",
"purl": "pkg:deb/ubuntu/sshfs-fuse?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"3.6.0+repack+really2.10-0ubuntu1",
"3.7.1+repack-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47187.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "sshfs",
"binary_version": "3.7.1+repack-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "sshfs-fuse",
"purl": "pkg:deb/ubuntu/sshfs-fuse?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"3.7.3-1.1build1",
"3.7.3-1.1build2",
"3.7.3-1.1build3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47187.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "sshfs",
"binary_version": "3.7.3-1.1build3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "sshfs-fuse",
"purl": "pkg:deb/ubuntu/sshfs-fuse?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"3.7.3-1.1build3",
"3.7.3-1.1build4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47187.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "sshfs",
"binary_version": "3.7.3-1.1build4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "sshfs-fuse",
"purl": "pkg:deb/ubuntu/sshfs-fuse?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"3.7.3-1.1build5",
"3.7.3-1.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47187.json"
},
"ecosystem_specific": {
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{
"binary_name": "sshfs",
"binary_version": "3.7.3-1.2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
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],
"package": {
"name": "sshfs-fuse",
"purl": "pkg:deb/ubuntu/sshfs-fuse?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"3.7.3-1.1build4",
"3.7.3-1.1build5"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47187.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "sshfs",
"binary_version": "3.7.3-1.1build5"
}
]
}
}
],
"modified": "2026-10-17T13:00:15.973749379Z",
"provider": "osv",
"upstream": [
"CVE-2026-47187"
],
"references": [
"https://ubuntu.com/security/CVE-2026-47187",
"https://www.cve.org/CVERecord?id=CVE-2026-47187",
"https://www.openwall.com/lists/oss-security/2026/05/30/3",
"https://github.com/libfuse/sshfs/security/advisories/GHSA-pjv6-2c3f-r357",
"https://github.com/libfuse/sshfs/pull/361"
]
},
"related_cves": [
{
"value": "CVE-2026-47187",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 360411,
"published_at": "2026-08-19T15:17:00+00:00"
}