HighFix available
unearth — security advisory
unearth through 0.18.2, fixed in commit 6c78164, contains a path traversal vulnerability in the is_within_directory function that fails to normalize paths before validation, allowing ../ sequences to bypass directory containment checks. Attackers can supply malicious tar archives with symlink members or traversal sequences to write files to arbitrary filesystem locations accessible to the process.
- Products
- unearth
- Affected versions
- 0.10.0+ds1-1, 0.11.0+ds-1, 0.12.1+ds-1, 0.14.0+ds-1, 0.15.0+ds-1, 0.15.1+ds-1, 0.15.2+ds-1, 0.15.3+ds-1, 0.15.4+ds-1, 0.15.5+ds-1, 0.16.0+ds-1, 0.16.1-1, 0.17.1-1, 0.17.2-1, 0.17.3-1, 0.17.5-1, 0.18.1-1, 0.18.2-1, 0.18.3-1, 0.18.3-2, 0.7.2+ds-2, 0.8.1+ds-1~exp1, 0.9.1+ds-1, 0.9.2+ds1-1
- Fixed versions
- 0.18.3-1
- CVEs
- CVE-2026-73030
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:56 UTC · Revision 1
Source evidence
unearth through 0.18.2, fixed in commit 6c78164, contains a path traversal vulnerability in the is_within_directory function that fails to normalize paths before validation, allowing ../ sequences to bypass directory containment checks. Attackers can supply malicious tar archives with symlink members or traversal sequences to write files to arbitrary filesystem locations accessible to the process.
osv:DEBIAN-CVE-2026-73030
unearth
Fixed versions: Not specified
unearth
Fixed versions: Not specified
unearth
Fixed versions: 0.18.3-1
Complete source record
{
"id": "dadf2152fb74da4b55f2e2c103a35975268f0f758dd201c3f61fa59ac2502c1a",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-73030",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-73030",
"summary": "unearth through 0.18.2, fixed in commit 6c78164, contains a path traversal vulnerability in the is_within_directory function that fails to normalize paths before validation, allowing ../ sequences to bypass directory containment checks. Attackers can supply malicious tar archives with symlink members or traversal sequences to write files to arbitrary filesystem locations accessible to the process.",
"evidence": "osv:DEBIAN-CVE-2026-73030",
"products": [
{
"name": {
"value": "unearth",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.10.0+ds1-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.11.0+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.12.1+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.14.0+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.15.0+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.15.1+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.15.2+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.15.3+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.15.4+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.15.5+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.16.0+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.16.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.17.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.17.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.17.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.17.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.18.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.18.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.18.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.18.3-2",
"evidence": "/affected/0/versions"
},
{
"value": "0.7.2+ds-2",
"evidence": "/affected/0/versions"
},
{
"value": "0.8.1+ds-1~exp1",
"evidence": "/affected/0/versions"
},
{
"value": "0.9.1+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.9.2+ds1-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "unearth",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.17.5-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.18.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.18.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.18.3-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.18.3-2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "unearth",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.18.3-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "0.17.5-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.18.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.18.2-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-73030",
"aliases": [
"DEBIAN-CVE-2026-73030"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/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": "unearth",
"purl": "pkg:deb/debian/unearth?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"0.10.0+ds1-1",
"0.11.0+ds-1",
"0.12.1+ds-1",
"0.14.0+ds-1",
"0.15.0+ds-1",
"0.15.1+ds-1",
"0.15.2+ds-1",
"0.15.3+ds-1",
"0.15.4+ds-1",
"0.15.5+ds-1",
"0.16.0+ds-1",
"0.16.1-1",
"0.17.1-1",
"0.17.2-1",
"0.17.3-1",
"0.17.5-1",
"0.18.1-1",
"0.18.2-1",
"0.18.3-1",
"0.18.3-2",
"0.7.2+ds-2",
"0.8.1+ds-1~exp1",
"0.9.1+ds-1",
"0.9.2+ds1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73030.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "unearth",
"purl": "pkg:deb/debian/unearth?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"0.17.5-1",
"0.18.1-1",
"0.18.2-1",
"0.18.3-1",
"0.18.3-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73030.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.18.3-1"
}
]
}
],
"package": {
"name": "unearth",
"purl": "pkg:deb/debian/unearth?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"0.17.5-1",
"0.18.1-1",
"0.18.2-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73030.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-25T09:47:40.756841554Z",
"provider": "osv",
"upstream": [
"CVE-2026-73030"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-73030"
]
},
"related_cves": [
{
"value": "CVE-2026-73030",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 445338,
"published_at": "2026-08-10T21:17:26.45+00:00"
}