unearth through 0.18.2, fixed in commit 6c78164, contains a path traversal vulnerability in the iswithindirectory 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.
{
"cwe_ids": [
"CWE-22"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73030.json",
"cna_assigner": "VulnCheck"
}