CVE-2026-73030: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in frostming unearth
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.
CVE-2026-73030: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in frostming unearth
Description
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.
CVSS v4.0
Score 7.2high
Affected software
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Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-10T18:48:59.022Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7a3406bf8831d5397b035e
Added to database: 08/10/2026, 20:26:46 UTC
Last updated: 08/10/2026, 20:26:46 UTC
Views: 1
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