CVE-2021-28966 — Vulnerability in tmpdir — CVE Details

HIGH

Tempfile on Windows path traversal vulnerability

Published May 6, 2021Updated January 27, 2025Source: osv

Summary

There is an unintentional directory creation vulnerability in `tmpdir` library bundled with Ruby on Windows. And there is also an unintentional file creation vulnerability in tempfile library bundled with Ruby on Windows, because it uses tmpdir internally.

Advisory Timeline

First published May 6, 2021 (1985 days ago).
Last revised January 27, 2025 — 1362 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Bundler

Update tmpdir to 0.1.2 or later

gem install tmpdir -v 0.1.2

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: rubygems (1).

Package	Ecosystem	Affected	Fixed In
tmpdir	rubygems	0.1.0, 0.1.1	0.1.2

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-22
Path TraversalMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

Frequently Asked Questions

What is CVE-2021-28966?: Tempfile on Windows path traversal vulnerability This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2021-28966?: CVE-2021-28966 affects tmpdir. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2021-28966 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-46f2-3v63-3xrp

BIT-ruby-2021-28966

BIT-ruby-min-2021-28966

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