Tar
CVE-2026-31802
MEDIUM
GHSA-9ppj-qmqm-q256
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Path canonicalization, traversal prevention
MITRE ATT&CK
2 techniques across 2 tactics: Discovery, Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploit ScenarioDerived | An attacker could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
node-tar is a full-featured Tar for Node.js.
RemediationAI
Fixed in version 7.5.11.. Validate and sanitize file path inputs. Use allowlists.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in npm
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-22 (Path Traversal). Affects node-tar is a full-featured Tar for Node.js.. node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Primary rating from GitHub Advisory.
CVSS VectorGitHub Advisory
Lifecycle Timeline
2DescriptionGitHub Advisory
node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.
Executive ViewAI
Organizations using node-tar should be aware of moderate risk from CVE-2026-31802, a path traversal vulnerability rated CVSS 5.5. This could allow unauthorized file access. Organizations should apply vendor updates when available and monitor for exploitation.
Apply vendor patch. If patching is delayed: restrict file access via WAF, implement allowlists.
Threat Intelligence Overview
NVD
CVE.org
EPSS
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Path traversal exploits occur when applications use user-controlled input to construct file system paths without proper validation.
Affected Products (CPE)GitHub Advisory
Directory traversal vulnerability in the safer_name_suffix function in GNU tar 1.14 through 1.29 might allow remote atta
node-tar before version 7.5.7 contains a path traversal vulnerability where inconsistent path resolution between validat
Arbitrary file overwrite in node-tar before 7.5.10 lets a malicious tar archive write files outside the intended extract
Arbitrary file overwrite and symlink poisoning in the node-tar library (versions <= 7.5.2) lets a malicious tar archive
An issue was discovered in the tar crate before 0.4.36 for Rust. Rated high severity (CVSS 7.5), this vulnerability is r
The npm package "tar" (aka node-tar) before versions 6.1.1, 5.0.6, 4.4.14, and 3.3.2 has a arbitrary File Creation/Overw
Path traversal in node-tar versions 7.5.7 and earlier allows local attackers to read and write arbitrary files outside t
node-tar is a Tar for Node.js. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authenti
Symlink poisoning via race condition in node-tar up to version 7.5.3 allows attackers to exploit Unicode normalization o
The npm package "tar" (aka node-tar) before versions 6.1.2, 5.0.7, 4.4.15, and 3.2.3 has an arbitrary File Creation/Over
The npm package "tar" (aka node-tar) before versions 4.4.16, 5.0.8, and 6.1.7 has an arbitrary file creation/overwrite a
GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to c
Exploit-DB