Path Traversal Vulnerability in Unearth Product by Frostming
CVE-2026-73030

7.2HIGH

Key Information:

Vendor

Frostming

Status
Unearth
Vendor
CVE Published:
10 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-73030?

A path traversal flaw exists in Unearth version 0.18.2, specifically within the is_within_directory function. This vulnerability arises because the application does not properly normalize file paths before validating them, allowing attackers to exploit this oversight. They can create malicious tar archives containing symlink members or traversal sequences, enabling them to write files to unauthorized filesystem locations that are accessible to the application process. This can lead to unauthorized access to sensitive information and potential data breaches.

Affected Version(s)

unearth 0 <= 0.18.2

unearth 0 <= 0.18.2

unearth 6c78164e7bfa28b8b3d6f247b87e560692e3c8ba

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-73030 - Proof of Concept

References

https://github.com/frostming/unearth/issues/180
technical-descriptionexploit
https://github.com/frostming/unearth/pull/181
issue-tracking
https://github.com/frostming/unearth/commit/6c78164e7bfa2...
patch

CVSS V4

Score:
7.2
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

YU SUN
.