TI-2018-14799 Aliases CVE-2018-20835 GHSA-x2mc-8fgj-3wmr

A vulnerability was found in tar-fs before 1.16.2.

LOW 37CWE-20Published 2019-04-30 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · High · None
Fix status: Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub.

Summary

A vulnerability was found in tar-fs before 1.16.2. An Arbitrary File Overwrite issue exists when extracting a tarball containing a hardlink to a file that already exists on the system, in conjunction with a later plain file with the same name as the hardlink. This plain file content replaces the existing file content.

Why it matters now

EPSS 0.02359 83rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed tar-fs (npm): 1.16.2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA
—	tar-fs (npm)	before 1.16.2	1.16.2	Patch available	GHSA-x2mc-8fgj-3wmr

— Vendor— Affected all versions Fixed in — No fix listed CNA
tar-fs (npm) Vendor— Affected before 1.16.2 Fixed in 1.16.2 Patch available GHSA-x2mc-8fgj-3wmr

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:tar-fs_project:tar-fs::::::::	before 1.16.2	Vulnerable	Tar-fs Project

cpe:2.3:a:tar-fs_project:tar-fs:*:*:*:*:*:*:*:* Versions before 1.16.2 Vulnerable ·Tar-fs Project

Remediation

Fix · GHSA-x2mc-8fgj-3wmr tar-fs (npm) Fixed in 1.16.2 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2018-20835
2026-10-03 Alias added: GHSA-x2mc-8fgj-3wmr

References

Exploit 1

https://hackerone.com/reports/344595

Patch 2

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2018-20835

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences