CVE-2026-73030

unearth 0.18.2 Path Traversal via Unnormalized Paths and Symlink Escape

Published Aug 10, 2026 CVSS 4.0 · 7.2 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title unearth 0.18.2 Path Traversal via Unnormalized Paths and Symlink Escape
First Time appeared Frostming
Frostming unearth
Weaknesses CWE-22
CPEs cpe:2.3:a:frostming:unearth:0.10.0:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.11.0:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.11.1:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.11.2:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.12.0:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.12.1:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.5.2:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.6.0:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.6.1:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.6.2:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.6.3:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.7.0:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.7.1:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.7.2:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.8.0:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.8.1:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.9.0:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.9.1:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.9.2:*:*:*:*:python:*:*
cpe:2.3:a:frostming:unearth:0.9.3:*:*:*:*:python:*:*
Vendors & Products Frostming
Frostming unearth
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H'}

cvssV4_0

{'score': 7.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 8, 2026, 2:08 PM
Reserved
Aug 10, 2026, 6:48 PM
Status
Deferred
Published
Aug 10, 2026, 9:17 PM
Modified
Oct 24, 2026, 3:10 PM