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CVE-2026-26960

Isaacs Tar path traversal

7.1 HIGHPublic exploitEPSS 0.21%
  1. Published20 Feb 2026

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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Affected products

Isaacs Tar< 7.5.8

Remediation

Fixed in
Isaacs Tar≥ 7.5.8

References

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Frequently asked

Is CVE-2026-26960 being actively exploited?

CVE-2026-26960 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.21%.

How severe is CVE-2026-26960?

CVE-2026-26960 has a CVSS 3.1 base score of 7.1, rated high. EPSS estimates a 0.21% probability of exploitation.

Which products are affected by CVE-2026-26960?

Affected products include Isaacs Tar.

How do I fix CVE-2026-26960?

Upgrade affected software to a fixed version, for example Isaacs Tar 7.5.8 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-26960 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.