High
node-tar Symlink Path Traversal via Drive-Relative Linkpath
Type: advisorySources: OSV
node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-31802
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 07:10 UTC · Revision 1
Source evidence
node-tar Symlink Path Traversal via Drive-Relative Linkpath
core-osv · Original sourcePublished 9 Mar 2026, 21:11 UTC
node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.
osv:CVE-2026-31802
Complete source record
{
"id": "85bd901d94a060a6a23c5af14587b4d9325b7eb529f0b1d8b8874dd5760d5c9e",
"url": "https://osv.dev/vulnerability/CVE-2026-31802",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "node-tar Symlink Path Traversal via Drive-Relative Linkpath",
"summary": "node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.",
"evidence": "osv:CVE-2026-31802",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-31802",
"aliases": [
"CVE-2026-31802",
"GHSA-9ppj-qmqm-q256"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/isaacs/node-tar",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "bf776f673164215074b62749e0fe80e5834588f4"
},
{
"fixed": "f48b5fa3b7985ddab96dc0f2125a4ffc9911b6ad"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:isaacs:tar:*:*:*:*:*:node.js:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "7.5.11"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "f48b5fa3b7985ddab96dc0f2125a4ffc9911b6ad"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v7.5.10",
"v7.5.9",
"v7.5.8",
"v7.5.7",
"v7.5.6",
"v7.5.5",
"v7.5.4",
"v7.5.3",
"v7.5.2",
"v7.5.1",
"v7.5.0",
"v7.4.4",
"v7.4.3",
"v7.4.2",
"v7.4.1",
"v7.4.0",
"v7.3.0",
"v7.2.0",
"v7.1.0",
"v7.0.1",
"v7.0.0",
"v6.2.1",
"v6.2.0",
"v6.1.15",
"v6.1.14",
"v6.1.13",
"v6.1.12",
"v6.1.11",
"v6.1.10",
"v6.1.9",
"v6.1.8",
"v6.1.7",
"v6.1.6",
"v6.1.5",
"v6.1.4",
"v6.1.3",
"v6.1.2",
"v6.1.1",
"v4.4.13",
"v5.0.5",
"v6.1.0",
"v6.0.5",
"v6.0.4",
"v6.0.3",
"v6.0.2",
"v6.0.1",
"v6.0.0",
"v5.0.2",
"v5.0.4",
"v5.0.3",
"v5.0.1",
"v4.4.12",
"v4.4.11",
"v4.4.10",
"v4.4.9",
"v2.2.1",
"v4.4.8",
"v4.4.7",
"v4.4.6",
"v4.4.5",
"v4.4.4",
"v4.4.3",
"v4.4.2",
"v4.4.1",
"v4.4.0",
"v4.3.3",
"v4.3.2",
"v4.3.1",
"v4.3.0",
"v4.2.0",
"v4.1.2",
"v4.1.1",
"v4.1.0",
"v4.0.2",
"v4.0.1",
"v3.2.0",
"v4.0.0",
"v3.1.15",
"v3.1.14",
"v3.1.13",
"v3.1.12",
"v3.1.11",
"v3.1.10",
"v3.1.9",
"v3.1.8",
"v3.1.7",
"v3.1.6",
"v3.1.5",
"v3.1.4",
"v3.1.3",
"v3.1.2",
"v3.1.1",
"v3.1.0",
"v3.0.1",
"v3.0.0",
"v2.1.1",
"v2.1.0",
"v2.0.1",
"v2.0.0",
"v1.0.3",
"v1.0.2",
"v1.0.1",
"v1.0.0",
"v0.1.20",
"v0.1.19",
"v0.1.18",
"v0.1.17",
"v0.1.16",
"v0.1.15",
"v0.1.14",
"0.1.13",
"0.1.12",
"0.1.11",
"0.1.10",
"0.1.9",
"0.1.8",
"0.1.7",
"0.1.6",
"0.1.5",
"0.1.3",
"0.1.2",
"0.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31802.json"
}
}
],
"modified": "2026-10-28T02:30:26.785685187Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31802.json",
"https://github.com/isaacs/node-tar/security/advisories/GHSA-9ppj-qmqm-q256",
"https://nvd.nist.gov/vuln/detail/CVE-2026-31802",
"https://github.com/isaacs/node-tar/commit/f48b5fa3b7985ddab96dc0f2125a4ffc9911b6ad"
],
"provider_metadata": {
"cwe_ids": [
"CWE-22"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31802.json"
}
},
"related_cves": [
{
"value": "CVE-2026-31802",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 493262,
"published_at": "2026-03-09T21:11:56.668+00:00"
}