UBUNTU-CVE-2026-73030
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.
UBUNTU-CVE-2026-73030
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:UBUNTU-CVE-2026-73030
unearth
Source reference: /affected/0/package/name
- Affected versions
- 0.9.2+ds1-1
Source reference:
/affected/0/versions0.11.0+ds-1Source reference:
/affected/0/versions0.12.1+ds-1Source reference:
/affected/0/versions0.14.0+ds-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
unearth
Source reference: /affected/1/package/name
- Affected versions
- 0.17.5-1
Source reference:
/affected/1/versions0.18.1-1Source reference:
/affected/1/versions0.18.2-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "unearth",
"purl": "pkg:deb/ubuntu/unearth?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"0.9.2+ds1-1",
"0.11.0+ds-1",
"0.12.1+ds-1",
"0.14.0+ds-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73030.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-unearth",
"binary_version": "0.14.0+ds-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "unearth",
"purl": "pkg:deb/ubuntu/unearth?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"0.17.5-1",
"0.18.1-1",
"0.18.2-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73030.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-unearth",
"binary_version": "0.18.2-1"
}
]
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #51959 · Revision 1
- Added to Heist Feed
- Publisher date