# CVE-2026-26960: node-tar has Arbitrary File Read/Write via Hardlink Target Escape Through Symlink Chain in Extraction

> CVE-2026-26960: node-tar has Arbitrary File Read/Write via Hardlink Target Escape Through Symlink Chain in Extraction. CVSS 7.1 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-26960
Last updated: 2026-06-17T10:26:27Z

- Published: 2026-02-20 01:07 UTC · Updated: 2026-06-17 10:26 UTC · Assigner: GitHub\_M
- CVSS: 7.1 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- EPSS: 0.33%, 26th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-22

## Description

node-tar is a full-featured Tar for Node.js. When using default options in versions 7.5.7 and below, an attacker-controlled archive can create a hardlink inside the extraction directory that points to a file outside the extraction root, enabling arbitrary file read and write as the extracting user. Severity is high because the primitive bypasses path protections and turns archive extraction into a direct filesystem access primitive. This issue has been fixed in version 7.5.8.

## Affected vendors and products

- isaacs: node-tar

## Tracked companies

- [Confluence](https://rewindex.com/company/confluence.md)
- [Jira](https://rewindex.com/company/jira.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-26960)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-26960)
- [https://github.com/isaacs/node-tar/commit/2cb1120bcefe28d7ecc719b41441ade59c52e384](https://github.com/isaacs/node-tar/commit/2cb1120bcefe28d7ecc719b41441ade59c52e384)
- [https://github.com/isaacs/node-tar/commit/d18e4e1f846f4ddddc153b0f536a19c050e7499f](https://github.com/isaacs/node-tar/commit/d18e4e1f846f4ddddc153b0f536a19c050e7499f)
- [https://github.com/isaacs/node-tar/security/advisories/GHSA-83g3-92jg-28cx](https://github.com/isaacs/node-tar/security/advisories/GHSA-83g3-92jg-28cx)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-26960 · Markdown: https://rewindex.com/cve/CVE-2026-26960.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-26960 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:37.431Z