HighFix available
pdm — security advisory
pdm is a Python package and dependency manager supporting the latest PEP standards. Versions prior to 2.27.0 are vulnerable to path traversal through write_to_fs. InstallDestination.write_to_fs() in src/pdm/installers/installers.py overrides the base class to add symlink/hardlink support but replaces the safe _path_with_destdir() (which validates via Path.resolve() + is_relative_to()) with a bare os.path.join() that performs no path validation. A malicious wheel with traversal entries can write arbitrary files. This issue has been fixed in version 2.27.0.
- Products
- pdm
- Affected versions
- 2.2.1+ds1-1, 2.2.1+ds1-2, 2.20.0.post1+ds1-1, 2.20.0.post1+ds1-2, 2.20.1+ds1-1, 2.20.1+ds1-2, 2.23.1-1, 2.23.1-2, 2.23.1-3, 2.23.1-4, 2.26.2-1, 2.26.6-1, 2.27.0-1, 2.28.0-1, 2.28.1-1, 2.29.0-1, 2.29.2-1, 2.29.3-1
- Fixed versions
- 2.27.0-1
- CVEs
- CVE-2026-47764
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:55 UTC · Revision 1
Source evidence
pdm is a Python package and dependency manager supporting the latest PEP standards. Versions prior to 2.27.0 are vulnerable to path traversal through write_to_fs. InstallDestination.write_to_fs() in src/pdm/installers/installers.py overrides the base class to add symlink/hardlink support but replaces the safe _path_with_destdir() (which validates via Path.resolve() + is_relative_to()) with a bare os.path.join() that performs no path validation. A malicious wheel with traversal entries can write arbitrary files. This issue has been fixed in version 2.27.0.
osv:DEBIAN-CVE-2026-47764
pdm
Fixed versions: Not specified
pdm
Fixed versions: Not specified
pdm
Fixed versions: 2.27.0-1
Complete source record
{
"id": "f5861904610afe7ed7550fbaefb74c7f72b78339e6d5a6bdd9de4e821adc863a",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-47764",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-47764",
"summary": "pdm is a Python package and dependency manager supporting the latest PEP standards. Versions prior to 2.27.0 are vulnerable to path traversal through write_to_fs. InstallDestination.write_to_fs() in src/pdm/installers/installers.py overrides the base class to add symlink/hardlink support but replaces the safe _path_with_destdir() (which validates via Path.resolve() + is_relative_to()) with a bare os.path.join() that performs no path validation. A malicious wheel with traversal entries can write arbitrary files. This issue has been fixed in version 2.27.0.",
"evidence": "osv:DEBIAN-CVE-2026-47764",
"products": [
{
"name": {
"value": "pdm",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.2.1+ds1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.2.1+ds1-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.20.0.post1+ds1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.20.0.post1+ds1-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.20.1+ds1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.20.1+ds1-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.23.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.23.1-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.23.1-3",
"evidence": "/affected/0/versions"
},
{
"value": "2.23.1-4",
"evidence": "/affected/0/versions"
},
{
"value": "2.26.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.26.6-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.27.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.28.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.28.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.29.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.29.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.29.3-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "pdm",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.20.1+ds1-2",
"evidence": "/affected/1/versions"
},
{
"value": "2.23.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.23.1-2",
"evidence": "/affected/1/versions"
},
{
"value": "2.23.1-3",
"evidence": "/affected/1/versions"
},
{
"value": "2.23.1-4",
"evidence": "/affected/1/versions"
},
{
"value": "2.26.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.26.6-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.27.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.28.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.28.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.29.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.29.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.29.3-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "pdm",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.27.0-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "2.20.1+ds1-2",
"evidence": "/affected/2/versions"
},
{
"value": "2.23.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.23.1-2",
"evidence": "/affected/2/versions"
},
{
"value": "2.23.1-3",
"evidence": "/affected/2/versions"
},
{
"value": "2.23.1-4",
"evidence": "/affected/2/versions"
},
{
"value": "2.26.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.26.6-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-47764",
"aliases": [
"DEBIAN-CVE-2026-47764"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "pdm",
"purl": "pkg:deb/debian/pdm?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.2.1+ds1-1",
"2.2.1+ds1-2",
"2.20.0.post1+ds1-1",
"2.20.0.post1+ds1-2",
"2.20.1+ds1-1",
"2.20.1+ds1-2",
"2.23.1-1",
"2.23.1-2",
"2.23.1-3",
"2.23.1-4",
"2.26.2-1",
"2.26.6-1",
"2.27.0-1",
"2.28.0-1",
"2.28.1-1",
"2.29.0-1",
"2.29.2-1",
"2.29.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47764.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "pdm",
"purl": "pkg:deb/debian/pdm?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.20.1+ds1-2",
"2.23.1-1",
"2.23.1-2",
"2.23.1-3",
"2.23.1-4",
"2.26.2-1",
"2.26.6-1",
"2.27.0-1",
"2.28.0-1",
"2.28.1-1",
"2.29.0-1",
"2.29.2-1",
"2.29.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47764.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.27.0-1"
}
]
}
],
"package": {
"name": "pdm",
"purl": "pkg:deb/debian/pdm?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.20.1+ds1-2",
"2.23.1-1",
"2.23.1-2",
"2.23.1-3",
"2.23.1-4",
"2.26.2-1",
"2.26.6-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47764.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-25T09:47:34.550904415Z",
"provider": "osv",
"upstream": [
"CVE-2026-47764"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-47764"
]
},
"related_cves": [
{
"value": "CVE-2026-47764",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 445287,
"published_at": "2026-08-04T19:16:51.093+00:00"
}