This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-73030 →

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 p...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Ubuntu:24.04:LTS unearth

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:26.04:LTS unearth

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

report ubuntu.com
report cve.org
report github.com
report github.com