Medium
rclone — security advisory
rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.1, rclone core does not reject parent-directory segments in source Object.Remote() values before fs/list, fs/walk, fs/sync, and fs/operations pass those values to destination backends. A flat-keyspace source object store populated with native non-rclone tooling can contain a raw .. key segment, and affected b2, swift, qingstor, oracleobjectstorage, internetarchive, smb, storj, sftp, webdav, ftp, filelu, shade, and sia destinations use path.Join(root, remote) before EncodeDot can neutralize the segment. A copy or upload can therefore escape the configured root into another bucket, share, or path reachable by the victim credential, with sftp and smb potentially reaching other filesystem or share locations under the same login authority. This issue is fixed in version 1.75.1.
- Products
- rclone
- Affected versions
- 1.36-3, 1.36-3ubuntu0.1, 1.36-3ubuntu0.2, 1.47.0+ex1-6, 1.47.0+ex1-7, 1.49.5-2, 1.49.5-3, 1.50.2-2, 1.50.2-2ubuntu0.1, 1.50.2-2ubuntu0.2, 1.50.2-2ubuntu0.2+esm1, 1.53.3-1, 1.53.3-2, 1.53.3-4, 1.53.3-4ubuntu1, 1.53.3-4ubuntu1.22.04.1, 1.53.3-4ubuntu1.22.04.2, 1.53.3-4ubuntu1.22.04.3, 1.53.3-4ubuntu1.22.04.3+esm1, 1.53.3-4ubuntu1.22.04.4, 1.53.3-4ubuntu1.22.04.4+esm1, 1.53.3-4ubuntu1.22.04.5, 1.53.3-4ubuntu1.22.04.5+esm1, 1.60.1+dfsg-2build1, 1.60.1+dfsg-3, 1.60.1+dfsg-3ubuntu0.24.04.1, 1.60.1+dfsg-3ubuntu0.24.04.2, 1.60.1+dfsg-3ubuntu0.24.04.3, 1.60.1+dfsg-3ubuntu0.24.04.4, 1.60.1+dfsg-3ubuntu0.24.04.4+esm1, 1.60.1+dfsg-3ubuntu0.24.04.5, 1.60.1+dfsg-3ubuntu0.24.04.5+esm1, 1.60.1+dfsg-3ubuntu0.24.04.6, 1.60.1+dfsg-3ubuntu0.24.04.6+esm1, 1.60.1+dfsg-4ubuntu2, 1.60.1+dfsg-4ubuntu3, 1.60.1+dfsg-4ubuntu3.1, 1.60.1+dfsg-4ubuntu3.1+esm1, 1.60.1+dfsg-4ubuntu3.2, 1.60.1+dfsg-4ubuntu3.2+esm1, 1.69.3+dfsg-3, 1.69.3+dfsg-3ubuntu1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-88046
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:29 UTC · Revision 1
Source evidence
rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.1, rclone core does not reject parent-directory segments in source Object.Remote() values before fs/list, fs/walk, fs/sync, and fs/operations pass those values to destination backends. A flat-keyspace source object store populated with native non-rclone tooling can contain a raw .. key segment, and affected b2, swift, qingstor, oracleobjectstorage, internetarchive, smb, storj, sftp, webdav, ftp, filelu, shade, and sia destinations use path.Join(root, remote) before EncodeDot can neutralize the segment. A copy or upload can therefore escape the configured root into another bucket, share, or path reachable by the victim credential, with sftp and smb potentially reaching other filesystem or share locations under the same login authority. This issue is fixed in version 1.75.1.
osv:UBUNTU-CVE-2026-88046
rclone
Fixed versions: Not specified
rclone
Fixed versions: Not specified
rclone
Fixed versions: Not specified
rclone
Fixed versions: Not specified
rclone
Fixed versions: Not specified
rclone
Fixed versions: Not specified
Complete source record
{
"id": "9188b3cc7680b9e3160e4bc3ca84f77cffc3763adc86eb530230e1ef0caae1cb",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-88046",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-88046",
"summary": "rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.1, rclone core does not reject parent-directory segments in source Object.Remote() values before fs/list, fs/walk, fs/sync, and fs/operations pass those values to destination backends. A flat-keyspace source object store populated with native non-rclone tooling can contain a raw .. key segment, and affected b2, swift, qingstor, oracleobjectstorage, internetarchive, smb, storj, sftp, webdav, ftp, filelu, shade, and sia destinations use path.Join(root, remote) before EncodeDot can neutralize the segment. A copy or upload can therefore escape the configured root into another bucket, share, or path reachable by the victim credential, with sftp and smb potentially reaching other filesystem or share locations under the same login authority. This issue is fixed in version 1.75.1.",
"evidence": "osv:UBUNTU-CVE-2026-88046",
"products": [
{
"name": {
"value": "rclone",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.36-3",
"evidence": "/affected/0/versions"
},
{
"value": "1.36-3ubuntu0.1",
"evidence": "/affected/0/versions"
},
{
"value": "1.36-3ubuntu0.2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "1.47.0+ex1-6",
"evidence": "/affected/1/versions"
},
{
"value": "1.47.0+ex1-7",
"evidence": "/affected/1/versions"
},
{
"value": "1.49.5-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.49.5-3",
"evidence": "/affected/1/versions"
},
{
"value": "1.50.2-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.50.2-2ubuntu0.1",
"evidence": "/affected/1/versions"
},
{
"value": "1.50.2-2ubuntu0.2",
"evidence": "/affected/1/versions"
},
{
"value": "1.50.2-2ubuntu0.2+esm1",
"evidence": "/affected/1/versions"
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{
"name": {
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"evidence": "/affected/2/package/name"
},
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"affected_versions": [
{
"value": "1.53.3-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.53.3-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.53.3-4",
"evidence": "/affected/2/versions"
},
{
"value": "1.53.3-4ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "1.53.3-4ubuntu1.22.04.1",
"evidence": "/affected/2/versions"
},
{
"value": "1.53.3-4ubuntu1.22.04.2",
"evidence": "/affected/2/versions"
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{
"value": "1.53.3-4ubuntu1.22.04.3",
"evidence": "/affected/2/versions"
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{
"value": "1.53.3-4ubuntu1.22.04.3+esm1",
"evidence": "/affected/2/versions"
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{
"value": "1.53.3-4ubuntu1.22.04.4",
"evidence": "/affected/2/versions"
},
{
"value": "1.53.3-4ubuntu1.22.04.4+esm1",
"evidence": "/affected/2/versions"
},
{
"value": "1.53.3-4ubuntu1.22.04.5",
"evidence": "/affected/2/versions"
},
{
"value": "1.53.3-4ubuntu1.22.04.5+esm1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "rclone",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.60.1+dfsg-2build1",
"evidence": "/affected/3/versions"
},
{
"value": "1.60.1+dfsg-3",
"evidence": "/affected/3/versions"
},
{
"value": "1.60.1+dfsg-3ubuntu0.24.04.1",
"evidence": "/affected/3/versions"
},
{
"value": "1.60.1+dfsg-3ubuntu0.24.04.2",
"evidence": "/affected/3/versions"
},
{
"value": "1.60.1+dfsg-3ubuntu0.24.04.3",
"evidence": "/affected/3/versions"
},
{
"value": "1.60.1+dfsg-3ubuntu0.24.04.4",
"evidence": "/affected/3/versions"
},
{
"value": "1.60.1+dfsg-3ubuntu0.24.04.4+esm1",
"evidence": "/affected/3/versions"
},
{
"value": "1.60.1+dfsg-3ubuntu0.24.04.5",
"evidence": "/affected/3/versions"
},
{
"value": "1.60.1+dfsg-3ubuntu0.24.04.5+esm1",
"evidence": "/affected/3/versions"
},
{
"value": "1.60.1+dfsg-3ubuntu0.24.04.6",
"evidence": "/affected/3/versions"
},
{
"value": "1.60.1+dfsg-3ubuntu0.24.04.6+esm1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "rclone",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.60.1+dfsg-4ubuntu3",
"evidence": "/affected/4/versions"
},
{
"value": "1.69.3+dfsg-3",
"evidence": "/affected/4/versions"
},
{
"value": "1.69.3+dfsg-3ubuntu1",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "rclone",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.60.1+dfsg-4ubuntu2",
"evidence": "/affected/5/versions"
},
{
"value": "1.60.1+dfsg-4ubuntu3",
"evidence": "/affected/5/versions"
},
{
"value": "1.60.1+dfsg-4ubuntu3.1",
"evidence": "/affected/5/versions"
},
{
"value": "1.60.1+dfsg-4ubuntu3.1+esm1",
"evidence": "/affected/5/versions"
},
{
"value": "1.60.1+dfsg-4ubuntu3.2",
"evidence": "/affected/5/versions"
},
{
"value": "1.60.1+dfsg-4ubuntu3.2+esm1",
"evidence": "/affected/5/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-88046",
"aliases": [
"UBUNTU-CVE-2026-88046"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rclone",
"purl": "pkg:deb/ubuntu/rclone?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"1.36-3",
"1.36-3ubuntu0.1",
"1.36-3ubuntu0.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88046.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-ncw-rclone-dev",
"binary_version": "1.36-3ubuntu0.2"
},
{
"binary_name": "rclone",
"binary_version": "1.36-3ubuntu0.2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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{
"introduced": "0"
}
]
}
],
"package": {
"name": "rclone",
"purl": "pkg:deb/ubuntu/rclone?arch=source&distro=esm-apps%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"1.47.0+ex1-6",
"1.47.0+ex1-7",
"1.49.5-2",
"1.49.5-3",
"1.50.2-2",
"1.50.2-2ubuntu0.1",
"1.50.2-2ubuntu0.2",
"1.50.2-2ubuntu0.2+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88046.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-rclone-rclone-dev",
"binary_version": "1.50.2-2ubuntu0.2+esm1"
},
{
"binary_name": "rclone",
"binary_version": "1.50.2-2ubuntu0.2+esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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{
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}
]
}
],
"package": {
"name": "rclone",
"purl": "pkg:deb/ubuntu/rclone?arch=source&distro=esm-apps%2Fjammy",
"ecosystem": "Ubuntu:Pro:22.04:LTS"
},
"versions": [
"1.53.3-1",
"1.53.3-2",
"1.53.3-4",
"1.53.3-4ubuntu1",
"1.53.3-4ubuntu1.22.04.1",
"1.53.3-4ubuntu1.22.04.2",
"1.53.3-4ubuntu1.22.04.3",
"1.53.3-4ubuntu1.22.04.3+esm1",
"1.53.3-4ubuntu1.22.04.4",
"1.53.3-4ubuntu1.22.04.4+esm1",
"1.53.3-4ubuntu1.22.04.5",
"1.53.3-4ubuntu1.22.04.5+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88046.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-rclone-rclone-dev",
"binary_version": "1.53.3-4ubuntu1.22.04.5+esm1"
},
{
"binary_name": "rclone",
"binary_version": "1.53.3-4ubuntu1.22.04.5+esm1"
}
]
}
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{
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{
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],
"package": {
"name": "rclone",
"purl": "pkg:deb/ubuntu/rclone?arch=source&distro=esm-apps%2Fnoble",
"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
"versions": [
"1.60.1+dfsg-2build1",
"1.60.1+dfsg-3",
"1.60.1+dfsg-3ubuntu0.24.04.1",
"1.60.1+dfsg-3ubuntu0.24.04.2",
"1.60.1+dfsg-3ubuntu0.24.04.3",
"1.60.1+dfsg-3ubuntu0.24.04.4",
"1.60.1+dfsg-3ubuntu0.24.04.4+esm1",
"1.60.1+dfsg-3ubuntu0.24.04.5",
"1.60.1+dfsg-3ubuntu0.24.04.5+esm1",
"1.60.1+dfsg-3ubuntu0.24.04.6",
"1.60.1+dfsg-3ubuntu0.24.04.6+esm1"
],
"database_specific": {
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},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-rclone-rclone-dev",
"binary_version": "1.60.1+dfsg-3ubuntu0.24.04.6+esm1"
},
{
"binary_name": "rclone",
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}
]
}
},
{
"ranges": [
{
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],
"package": {
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},
"versions": [
"1.60.1+dfsg-4ubuntu3",
"1.69.3+dfsg-3",
"1.69.3+dfsg-3ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88046.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-rclone-rclone-dev",
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},
{
"binary_name": "rclone",
"binary_version": "1.69.3+dfsg-3ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rclone",
"purl": "pkg:deb/ubuntu/rclone?arch=source&distro=esm-apps%2Fresolute",
"ecosystem": "Ubuntu:Pro:26.04:LTS"
},
"versions": [
"1.60.1+dfsg-4ubuntu2",
"1.60.1+dfsg-4ubuntu3",
"1.60.1+dfsg-4ubuntu3.1",
"1.60.1+dfsg-4ubuntu3.1+esm1",
"1.60.1+dfsg-4ubuntu3.2",
"1.60.1+dfsg-4ubuntu3.2+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88046.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-rclone-rclone-dev",
"binary_version": "1.60.1+dfsg-4ubuntu3.2+esm1"
},
{
"binary_name": "rclone",
"binary_version": "1.60.1+dfsg-4ubuntu3.2+esm1"
}
]
}
}
],
"modified": "2026-10-17T13:01:15.110507854Z",
"provider": "osv",
"upstream": [
"CVE-2026-88046"
],
"references": [
"https://ubuntu.com/security/CVE-2026-88046",
"https://www.cve.org/CVERecord?id=CVE-2026-88046"
]
},
"related_cves": [
{
"value": "CVE-2026-88046",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 361370,
"published_at": "2026-09-10T17:17:00+00:00"
}