High
node-tar — security advisory
node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3.
- Products
- node-tar
- Affected versions
- 0.1.18-1, 0.1.18-1ubuntu0.1~esm1, 1.0.3-2, 1.0.3-2ubuntu0.1~esm1, 2.2.1-1, 4.4.10+ds1-2, 4.4.10+ds1-2ubuntu1, 4.4.10+ds1-2ubuntu1+esm1, 6.1.11+ds1+~cs6.0.6-1, 6.1.11+~cs11.3.10-1, 6.1.13+~cs7.0.5-1, 6.1.13+~cs7.0.5-3, 6.1.7+~cs11.3.10-1, 6.2.1+ds1+~cs6.1.13-10, 6.2.1+ds1+~cs6.1.13-6, 6.2.1+ds1+~cs6.1.13-7, 6.2.1+~cs7.0.8-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-23745
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:18 UTC · Revision 1
Source evidence
node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3.
osv:UBUNTU-CVE-2026-23745
node-tar
Fixed versions: Not specified
node-tar
Fixed versions: Not specified
node-tar
Fixed versions: Not specified
node-tar
Fixed versions: Not specified
node-tar
Fixed versions: Not specified
node-tar
Fixed versions: Not specified
node-tar
Fixed versions: Not specified
node-tar
Fixed versions: Not specified
Complete source record
{
"id": "a82e2e4cb4025fde55bfd349c1e022503ad21149a49b8ed497bc81ce3615dd01",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-23745",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-23745",
"summary": "node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3.",
"evidence": "osv:UBUNTU-CVE-2026-23745",
"products": [
{
"name": {
"value": "node-tar",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.1.18-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.1.18-1ubuntu0.1~esm1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
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"affected_versions": [
{
"value": "1.0.3-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.0.3-2ubuntu0.1~esm1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
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"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.2.1-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
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"evidence": "/affected/3/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "4.4.10+ds1-2",
"evidence": "/affected/3/versions"
},
{
"value": "4.4.10+ds1-2ubuntu1",
"evidence": "/affected/3/versions"
},
{
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"evidence": "/affected/3/versions"
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]
},
{
"name": {
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"evidence": "/affected/4/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
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"evidence": "/affected/4/versions"
},
{
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"evidence": "/affected/4/versions"
},
{
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"evidence": "/affected/4/versions"
}
]
},
{
"name": {
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"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "6.1.13+~cs7.0.5-1",
"evidence": "/affected/5/versions"
},
{
"value": "6.1.13+~cs7.0.5-3",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "node-tar",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "6.2.1+~cs7.0.8-1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
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"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "6.2.1+~cs7.0.8-1",
"evidence": "/affected/7/versions"
},
{
"value": "6.2.1+ds1+~cs6.1.13-6",
"evidence": "/affected/7/versions"
},
{
"value": "6.2.1+ds1+~cs6.1.13-7",
"evidence": "/affected/7/versions"
},
{
"value": "6.2.1+ds1+~cs6.1.13-10",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-23745",
"aliases": [
"UBUNTU-CVE-2026-23745"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
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"purl": "pkg:deb/ubuntu/node-tar?arch=source&distro=esm-infra-legacy%2Ftrusty",
"ecosystem": "Ubuntu:Pro:14.04:LTS"
},
"versions": [
"0.1.18-1",
"0.1.18-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23745.json"
},
"ecosystem_specific": {
"binaries": [
{
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"binary_version": "0.1.18-1ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-tar",
"purl": "pkg:deb/ubuntu/node-tar?arch=source&distro=esm-apps%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"1.0.3-2",
"1.0.3-2ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23745.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-tar",
"binary_version": "1.0.3-2ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
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]
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],
"package": {
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"purl": "pkg:deb/ubuntu/node-tar?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"2.2.1-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23745.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-tar",
"binary_version": "2.2.1-1"
}
]
}
},
{
"ranges": [
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"type": "ECOSYSTEM",
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{
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],
"package": {
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"purl": "pkg:deb/ubuntu/node-tar?arch=source&distro=esm-apps%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"4.4.10+ds1-2",
"4.4.10+ds1-2ubuntu1",
"4.4.10+ds1-2ubuntu1+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23745.json"
},
"ecosystem_specific": {
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"package": {
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"purl": "pkg:deb/ubuntu/node-tar?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"6.1.7+~cs11.3.10-1",
"6.1.11+~cs11.3.10-1",
"6.1.11+ds1+~cs6.0.6-1"
],
"database_specific": {
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},
"ecosystem_specific": {
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},
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"6.1.13+~cs7.0.5-1",
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"ecosystem": "Ubuntu:25.10"
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},
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},
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"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
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"6.2.1+ds1+~cs6.1.13-6",
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"6.2.1+ds1+~cs6.1.13-10"
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},
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{
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}
]
}
}
],
"modified": "2026-10-27T04:17:51.578498653Z",
"provider": "osv",
"upstream": [
"CVE-2026-23745"
],
"references": [
"https://ubuntu.com/security/CVE-2026-23745",
"https://www.cve.org/CVERecord?id=CVE-2026-23745",
"https://github.com/isaacs/node-tar/security/advisories/GHSA-8qq5-rm4j-mr97",
"https://github.com/isaacs/node-tar/commit/340eb285b6d986e91969a1170d7fe9b0face405e"
]
},
"related_cves": [
{
"value": "CVE-2026-23745",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 460306,
"published_at": "2026-01-16T22:16:00+00:00"
}