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UBUNTU-CVE-2026-73030

Type: advisorySource: OSV1 source record

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.

Announced Source revision 1
Original source ↗

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/versions

0.11.0+ds-1

Source reference: /affected/0/versions

0.12.1+ds-1

Source reference: /affected/0/versions

0.14.0+ds-1

Source 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/versions

0.18.1-1

Source reference: /affected/1/versions

0.18.2-1

Source 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
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